Evaluation Study for the Chef Anchor 3.0 Program
NCT Number: NCT06572748
Status: NOT_YET_RECRUITING
Study Type: INTERVENTIONAL
Phases: NA
Conditions: Mild Cognitive Impairment|Dementia
Interventions: OTHER: 10-week programme
Sponsor: The University of Hong Kong
Collaborators: Hong Kong Sheng Kung Hui Welfare Council Limited
Sex: ALL
Age: ADULT, OLDER_ADULT
Enrollment: 136
Study Design: Allocation: RANDOMIZED|Intervention Model: PARALLEL|Masking: SINGLE (OUTCOMES_ASSESSOR)|Primary Purpose: PREVENTION
Start Date: 2024-10-01
Completion Date: 2025-11-30
Locations: Elderly community centre, Hong Kong, Hong Kong

Summary:
Objectives:

1. (Primary)To estimate the potential effects of the cooking program on the people with MCI/dementia and their informal caregivers;
2. To investigate if the potential effects can be maintained after the completion of the program.

Study design and participants:

A convenience sample of 68 pair older adults with MCI/dementia and their informal caregivers from the Chef Anchor 3.0 Programme will be referred to the research team. Overall, participants will be randomly assigned to intervention group and waitlist control group in a ratio of 1:1. Assessors of outcomes and data analyst will be blinded throughout the whole study.

During the first 10 weeks, the intervention group will undergo the 10-week programme in the "Chef Anchor 3.0", while no activity for the waitlist control group. Then, from week 10 to 20, the waitlist control group will attend the same 10-week programme.

Measurements:

Main outcome measures for people with MCI/dementia will include confidence in cooking (Primary), cooking capability, satisfaction with autonomy in cooking, Satisfaction with meal choices, Worried about future cooking ability and meal choices, cognitive function, self-reported appetite, psychological well-being, family harmony and satisfaction, as well as self-rated health.

Outcome measures for informal caregivers will include confidence in care recipient' s cooking, worried about future cooking ability and meal choices of care recipient, caregiver burden, psychological well-being, family harmony and satisfaction, as well as self-rated health.

Other measures will include attendance rate, home practice rate, drop-out rate, programme satisfaction, and recommendation to others.

Hypotheses

1. The confidence in cooking, cooking capability, satisfaction with autonomy in cooking, satisfaction with meal choices, worried about future cooking ability and meal choices, cognitive function, self-reported appetite, psychological well-being, family satisfaction, and self-rated health of older adults with MCI/dementia would improve after the programme;
2. The confidence in care recipient's cooking, worried about future cooking ability and meal choices of care recipient, psychological well-being, family satisfaction, caregiver burden, and self-rated health of informal caregivers would improve after the programme;
3. The 10-week programme is acceptable for the most of older adults with MCI/dementia and their informal caregivers.

Primary Outcome Measures: Change from baseline confidence in cooking of people with MCI/dementia at 10 weeks, measured by a single question asking to what extent (1 to 10) the participant feels confident with cooking a meal. Score 1 refers to no confidence and score 10 refers to very confident. Ten smileys will be used to visualize the different extent. This outcome is the primary outcome., 10 weeks after baseline|Change from baseline confidence in cooking of people with MCI/dementia at 20 weeks, measured by a single question asking to what extent (1 to 10) the participant feels confident with cooking a meal. Score 1 refers to no confidence and score 10 refers to very confident. Ten smileys will be used to visualize the different extent. This outcome is the primary outcome., 20 weeks after baseline|Change from baseline confidence in cooking of people with MCI/dementia at 30 weeks, measured by a single question asking to what extent (1 to 10) the participant feels confident with cooking a meal. Score 1 refers to no confidence and score 10 refers to very confident. Ten smileys will be used to visualize the different extent. This outcome is the primary outcome., 30 weeks after baseline, only for waitlist control group
Secondary Outcome Measures: Change from baseline cooking capability of people with MCI/dementia at 10 weeks, measured by a single question asking how much assistance from others the participant is needed when cooking. Score 0 refers to never cook, score 1 refers to being able to cook independently, score 2 refers to sometimes or part of the process requires help from others or requiring special assistive equipment/devices, and score 3 refers to being dependent on help from others or unable to complete this activity due to health condition., 10 weeks after baseline|Change from baseline cooking capability of people with MCI/dementia at 20 weeks, measured by a single question asking how much assistance from others the participant is needed when cooking. Score 0 refers to never cook, score 1 refers to being able to cook independently, score 2 refers to sometimes or part of the process requires help from others or requiring special assistive equipment/devices, and score 3 refers to being dependent on help from others or unable to complete this activity due to health condition, 20 weeks after baseline|Change from baseline cooking capability of people with MCI/dementia at 30 weeks, measured by a single question asking how much assistance from others the participant is needed when cooking. Score 0 refers to never cook, score 1 refers to being able to cook independently, score 2 refers to sometimes or part of the process requires help from others or requiring special assistive equipment/devices, and score 3 refers to being dependent on help from others or unable to complete this activity due to health condition., 30 weeks after baseline, only for waitlist control group|Change from baseline satisfaction with autonomy in cooking of people with MCI/dementia at 10 weeks, measured by a single question asking to what extent (1 to 10) the participant is satisfied with the ability to cook a meal autonomously. Score 1 refers to not satisfactory at all and score 10 refers to very satisfactory. Ten smileys will be used to visualize the different extent., 10 weeks after baseline|Change from baseline satisfaction with autonomy in cooking of people with MCI/dementia at 20 weeks, measured by a single question asking to what extent (1 to 10) the participant is satisfied with the ability to cook a meal autonomously. Score 1 refers to not satisfactory at all and score 10 refers to very satisfactory. Ten smileys will be used to visualize the different extent., 20 weeks after baseline|Change from baseline satisfaction with autonomy in cooking of people with MCI/dementia at 30 weeks, measured by a single question asking to what extent (1 to 10) the participant is satisfied with the ability to cook a meal autonomously. Score 1 refers to not satisfactory at all and score 10 refers to very satisfactory. Ten smileys will be used to visualize the different extent., 30 weeks after baseline, only for waitlist control group|Change from baseline satisfaction with meal choices of people with MCI/dementia at 10 weeks, measured by two questions asking to what extent (1 to 10) the participant is satisfied with the choice of ingredients and cooking methods, respectively. Score 1 refers to not satisfactory at all and score 10 refers to very satisfactory. Ten smileys will be used to visualize the different extent., 10 weeks after baseline|Change from baseline satisfaction with meal choices of people with MCI/dementia at 20 weeks, measured by two questions asking to what extent (1 to 10) the participant is satisfied with the choice of ingredients and cooking methods, respectively. Score 1 refers to not satisfactory at all and score 10 refers to very satisfactory. Ten smileys will be used to visualize the different extent., 20 weeks after baseline|Change from baseline satisfaction with meal choices of people with MCI/dementia at 30 weeks, measured by two questions asking to what extent (1 to 10) the participant is satisfied with the choice of ingredients and cooking methods, respectively. Score 1 refers to not satisfactory at all and score 10 refers to very satisfactory. Ten smileys will be used to visualize the different extent., 30 weeks after baseline, only for waitlist control group|Change from baseline worried about future cooking ability and meal choices of people with MCI/dementia at 10 weeks, measured by three questions to what extent (1 to 10) the participant is worried about with the future cooking ability, choice of ingredients and cooking methods, respectively. Score 1 refers to completely worried and score 10 refers to not worried at all. Ten smileys will be used to visualize the different extent., 10 weeks after baseline|Change from baseline worried about future cooking ability and meal choices of people with MCI/dementia at 20 weeks, measured by three questions to what extent (1 to 10) the participant is worried about with the future cooking ability, choice of ingredients and cooking methods, respectively. Score 1 refers to completely worried and score 10 refers to not worried at all. Ten smileys will be used to visualize the different extent., 20 weeks after baseline|Change from baseline worried about future cooking ability and meal choices of people with MCI/dementia at 30 weeks, measured by three questions to what extent (1 to 10) the participant is worried about with the future cooking ability, choice of ingredients and cooking methods, respectively. Score 1 refers to completely worried and score 10 refers to not worried at all. Ten smileys will be used to visualize the different extent., 30 weeks after baseline, only for waitlist control group|Change from baseline cognitive function of people with MCI/dementia at 10 weeks, measured by the Chinese version of 5-min Montreal Cognitive Assessment (MoCA) (Feng et al., 2021; A. Wong et al., 2015). The assessment comprises four parts, including memory, language fluency, orientation, and delayed recall. The total score ranged between 0 to 30, and is obtained by summing the sub-scores from each part, with a higher score indicating better cognitive function. To determine the cognitive performance of participants, their scores will be compared to their age- and education-specific standards., 10 weeks after baseline|Change from baseline cognitive function of people with MCI/dementia at 20 weeks, measured by the Chinese version of 5-min Montreal Cognitive Assessment (MoCA) (Feng et al., 2021; A. Wong et al., 2015). The assessment comprises four parts, including memory, language fluency, orientation, and delayed recall. The total score ranged between 0 to 30, and is obtained by summing the sub-scores from each part, with a higher score indicating better cognitive function. To determine the cognitive performance of participants, their scores will be compared to their age- and education-specific standards., 20 weeks after baseline|Change from baseline cognitive function of people with MCI/dementia at 30 weeks, measured by the Chinese version of 5-min Montreal Cognitive Assessment (MoCA) (Feng et al., 2021; A. Wong et al., 2015). The assessment comprises four parts, including memory, language fluency, orientation, and delayed recall. The total score ranged between 0 to 30, and is obtained by summing the sub-scores from each part, with a higher score indicating better cognitive function. To determine the cognitive performance of participants, their scores will be compared to their age- and education-specific standards., 30 weeks after baseline, only for waitlist control group|Change from baseline self-reported appetite of people with MCI/dementia at 10 weeks, measured by a single question asking to what extent (1 to 10) the participant agrees the appetite is good. Score 1 refers to not agree at all and score 10 refers to totally agree. Higher score indicates better appetite. Ten smileys will be used to visualize the different extent., 10 weeks after baseline|Change from baseline self-reported appetite of people with MCI/dementia at 20 weeks, measured by a single question asking to what extent (1 to 10) the participant agrees the appetite is good. Score 1 refers to not agree at all and score 10 refers to totally agree. Higher score indicates better appetite. Ten smileys will be used to visualize the different extent., 20 weeks after baseline|Change from baseline self-reported appetite of people with MCI/dementia at 30 weeks, measured by a single question asking to what extent (1 to 10) the participant agrees the appetite is good. Score 1 refers to not agree at all and score 10 refers to totally agree. Higher score indicates better appetite. Ten smileys will be used to visualize the different extent, 30 weeks after baseline, only for waitlist control group|Change from baseline meaning in life of psychological well-being of people with MCI/dementia at 10 weeks, Measured by two questions asking to what extent (1 to 10) the participant agrees with there is purpose and meaning in life, respectively. Score 1 refers to not agree at all and score 10 refers to totally agree. Ten smileys will be used to visualize the different extent., 10 weeks after baseline|Change from baseline meaning in life of psychological well-being of people with MCI/dementia at 20 weeks, Measured by two questions asking to what extent (1 to 10) the participant agrees with there is purpose and meaning in life, respectively. Score 1 refers to not agree at all and score 10 refers to totally agree. Ten smileys will be used to visualize the different extent., 20 weeks after baseline|Change from baseline meaning in life of psychological well-being of people with MCI/dementia at 30 weeks, Measured by two questions asking to what extent (1 to 10) the participant agrees with there is purpose and meaning in life, respectively. Score 1 refers to not agree at all and score 10 refers to totally agree. Ten smileys will be used to visualize the different extent., 30 weeks after baseline, only for waitlist control group|Change from baseline Happiness of psychological well-being of people with MCI/dementia at 10 weeks, Measured by a single question asking about the extent of happiness in the past two months. Score 1 refers to not happy at all and score 10 refers to total happiness. Ten smileys will be used to visualize the different extent., 10 weeks after baseline|Change from baseline Happiness of psychological well-being of people with MCI/dementia at 20 weeks, Measured by a single question asking about the extent of happiness in the past two months. Score 1 refers to not happy at all and score 10 refers to total happiness. Ten smileys will be used to visualize the different extent., 20 weeks after baseline|Change from baseline Happiness of psychological well-being of people with MCI/dementia at 30 weeks, Measured by a single question asking about the extent of happiness in the past two months. Score 1 refers to not happy at all and score 10 refers to total happiness. Ten smileys will be used to visualize the different extent., 30 weeks after baseline, only for waitlist control group|Change from baseline food-related life satisfaction of psychological well-being of people with MCI/dementia at 10 weeks, Measured by the Satisfaction With Food-Related Life (SWFL) scale (Grunert et al., 2007). Total score ranges from 5 to 30. A higher score indicates a greater level of food-related life satisfaction., 10 weeks after baseline|Change from baseline food-related life satisfaction of psychological well-being of people with MCI/dementia at 20 weeks, Measured by the Satisfaction With Food-Related Life (SWFL) scale (Grunert et al., 2007). Total score ranges from 5 to 30. A higher score indicates a greater level of food-related life satisfaction., 20 weeks after baseline|Change from baseline food-related life satisfaction of psychological well-being of people with MCI/dementia at 30 weeks, Measured by the Satisfaction With Food-Related Life (SWFL) scale (Grunert et al., 2007). Total score ranges from 5 to 30. A higher score indicates a greater level of food-related life satisfaction., 30 weeks after baseline, only for waitlist control group|Change from baseline self-esteem of psychological well-being of people with MCI/dementia at 10 weeks, Measured by the Chinese version of the Rosenberg Self-Esteem Scale (RSE), containing 10 items. Higher total score indicating higher self-esteem (Yeung, 1998)., 10 weeks after baseline|Change from baseline self-esteem of psychological well-being of people with MCI/dementia at 20 weeks, Measured by the Chinese version of the Rosenberg Self-Esteem Scale (RSE), containing 10 items. Higher total score indicating higher self-esteem (Yeung, 1998)., 20 weeks after baseline|Change from baseline self-esteem of psychological well-being of people with MCI/dementia at 30 weeks, Measured by the Chinese version of the Rosenberg Self-Esteem Scale (RSE), containing 10 items. Higher total score indicating higher self-esteem (Yeung, 1998)., 30 weeks after baseline, only for waitlist control group|Change from baseline family harmony and satisfaction of people with MCI/dementia at 10 weeks, measured by Chinese version of 5-item Family Harmony Scale (FHS-5) (Kavikondala et al., 2016). Five related questions asking to what extent (1 to 5) the participant agrees with the statement. These questions include (1) my family functions well for all members, (2) my family's day-to-day interactions are peaceful, (3) family members accommodate each other, (4) I am proud of my family, and (5) my family is harmonious. Score 1 refers to strongly agree, score 2 refers to agree, score 3 refers to neutral, score 4 refers to disagree, and score 5 refers to strongly disagree. Total score ranges from 5 to 25. Higher score indicates worse family harmony and satisfaction., 10 weeks after baseline|Change from baseline family harmony and satisfaction of people with MCI/dementia at 20 weeks, measured by Chinese version of 5-item Family Harmony Scale (FHS-5) (Kavikondala et al., 2016). Five related questions asking to what extent (1 to 5) the participant agrees with the statement. These questions include (1) my family functions well for all members, (2) my family's day-to-day interactions are peaceful, (3) family members accommodate each other, (4) I am proud of my family, and (5) my family is harmonious. Score 1 refers to strongly agree, score 2 refers to agree, score 3 refers to neutral, score 4 refers to disagree, and score 5 refers to strongly disagree. Total score ranges from 5 to 25. Higher score indicates worse family harmony and satisfaction., 20 weeks after baseline|Change from baseline family harmony and satisfaction of people with MCI/dementia at 30 weeks, measured by Chinese version of 5-item Family Harmony Scale (FHS-5) (Kavikondala et al., 2016). Five related questions asking to what extent (1 to 5) the participant agrees with the statement. These questions include (1) my family functions well for all members, (2) my family's day-to-day interactions are peaceful, (3) family members accommodate each other, (4) I am proud of my family, and (5) my family is harmonious. Score 1 refers to strongly agree, score 2 refers to agree, score 3 refers to neutral, score 4 refers to disagree, and score 5 refers to strongly disagree. Total score ranges from 5 to 25. Higher score indicates worse family harmony and satisfaction., 30 weeks after baseline, only for waitlist control group|Change from baseline self-rated health of people with MCI/dementia at 10 weeks, measured by a single question asking the participant to rate his or her health (Lam et al., 1998). Score 1 refers to excellent, score 2 refers to very good, score 3 refers to good, score 4 refers to fair, and score 5 refers to poor., 10 weeks after baseline|Change from baseline self-rated health of people with MCI/dementia at 20 weeks, measured by a single question asking the participant to rate his or her health (Lam et al., 1998). Score 1 refers to excellent, score 2 refers to very good, score 3 refers to good, score 4 refers to fair, and score 5 refers to poor., 20 weeks after baseline|Change from baseline self-rated health of people with MCI/dementia at 30 weeks, measured by a single question asking the participant to rate his or her health (Lam et al., 1998). Score 1 refers to excellent, score 2 refers to very good, score 3 refers to good, score 4 refers to fair, and score 5 refers to poor., 30 weeks after baseline, only for waitlist control group|Change from baseline confidence in care recipient's cooking of caregivers at 10 weeks, measured by a single question in the questionnaire asking to what extent (1 to 10) the caregiver trusts the care recipient to cook themselves. Score 1 refers to not trust at all and score 10 refers to complete trust., 10 weeks after baseline|Change from baseline confidence in care recipient's cooking of caregivers at 20 weeks, measured by a single question in the questionnaire asking to what extent (1 to 10) the caregiver trusts the care recipient to cook themselves. Score 1 refers to not trust at all and score 10 refers to complete trust., 20 weeks after baseline|Change from baseline confidence in care recipient's cooking of caregivers at 30 weeks, measured by a single question in the questionnaire asking to what extent (1 to 10) the caregiver trusts the care recipient to cook themselves. Score 1 refers to not trust at all and score 10 refers to complete trust., 30 weeks after baseline, only for waitlist control group|Change from baseline worried about future cooking ability and meal choices of care recipient of caregivers at 10 weeks, measured by three questions to what extent (1 to 10) the participant is worried about with the future cooking ability, choice of ingredients and cooking methods, respectively. Score 1 refers to completely worried and score 10 refers to not worried at all., 10 weeks after baseline|Change from baseline worried about future cooking ability and meal choices of care recipient of caregivers at 20 weeks, measured by three questions to what extent (1 to 10) the participant is worried about with the future cooking ability, choice of ingredients and cooking methods, respectively. Score 1 refers to completely worried and score 10 refers to not worried at all., 20 weeks after baseline|Change from baseline worried about future cooking ability and meal choices of care recipient of caregivers at 30 weeks, measured by three questions to what extent (1 to 10) the participant is worried about with the future cooking ability, choice of ingredients and cooking methods, respectively. Score 1 refers to completely worried and score 10 refers to not worried at all., 30 weeks after baseline, only for waitlist control group|Change from baseline caregiver burden at 10 weeks, measured by the Zarit Burden Interview (ZBI) scale (Chan et al., 2005; Schreiner et al., 2006; Zarit et al., 1980). The ZBI consists of 22 items rated on a 5-point Likert scale that ranges from 0 (never) to 4 (nearly always) with the sum of scores ranging between 0 and 88. Higher scores indicate a greater burden. A score of 17 or more was considered a high burden., 10 weeks after baseline|Change from baseline caregiver burden at 20 weeks, measured by the Zarit Burden Interview (ZBI) scale (Chan et al., 2005; Schreiner et al., 2006; Zarit et al., 1980). The ZBI consists of 22 items rated on a 5-point Likert scale that ranges from 0 (never) to 4 (nearly always) with the sum of scores ranging between 0 and 88. Higher scores indicate a greater burden. A score of 17 or more was considered a high burden., 20 weeks after baseline|Change from baseline caregiver burden at 30 weeks, measured by the Zarit Burden Interview (ZBI) scale (Chan et al., 2005; Schreiner et al., 2006; Zarit et al., 1980). The ZBI consists of 22 items rated on a 5-point Likert scale that ranges from 0 (never) to 4 (nearly always) with the sum of scores ranging between 0 and 88. Higher scores indicate a greater burden. A score of 17 or more was considered a high burden., 30 weeks after baseline, only for waitlist control group|Change from baseline meaning in life of psychological well-being of caregiver at 10 weeks, Measured by the Chinese version of the Meaning in Life Questionnaire. Total score ranged between 0 to 100. A higher total score indicates a greater sense of meaning in life., 10 weeks after baseline|Change from baseline meaning in life of psychological well-being of caregiver at 20 weeks, Measured by the Chinese version of the Meaning in Life Questionnaire. Total score ranged between 0 to 100. A higher total score indicates a greater sense of meaning in life., 20 weeks after baseline|Change from baseline meaning in life of psychological well-being of caregiver at 30 weeks, Measured by the Chinese version of the Meaning in Life Questionnaire. Total score ranged between 0 to 100. A higher total score indicates a greater sense of meaning in life., 30 weeks after baseline, only for waitlist control group|Change from baseline happiness of psychological well-being of caregiver at 10 weeks, Measured by the Chinese version of the 4-item Subjective Happiness Scale (SHS). The score is the average of the four items (1 to 7), a higher score indicates a higher level of subjective happiness., 10 weeks after baseline|Change from baseline happiness of psychological well-being of caregiver at 20 weeks, Measured by the Chinese version of the 4-item Subjective Happiness Scale (SHS). The score is the average of the four items (1 to 7), a higher score indicates a higher level of subjective happiness., 20 weeks after baseline|Change from baseline happiness of psychological well-being of caregiver at 30 weeks, Measured by the Chinese version of the 4-item Subjective Happiness Scale (SHS). The score is the average of the four items (1 to 7), a higher score indicates a higher level of subjective happiness., 30 weeks after baseline, only for waitlist control group|Change from baseline life satisfaction of psychological well-being of caregiver at 10 weeks, Measured by the Chinese version of the satisfaction with life scale (SWLS). Total score ranges from 5 to 35. A higher average score indicates a greater level of life satisfaction., 10 weeks after baseline|Change from baseline life satisfaction of psychological well-being of caregiver at 20 weeks, Measured by the Chinese version of the satisfaction with life scale (SWLS). Total score ranges from 5 to 35. A higher average score indicates a greater level of life satisfaction., 20 weeks after baseline|Change from baseline life satisfaction of psychological well-being of caregiver at 30 weeks, Measured by the Chinese version of the satisfaction with life scale (SWLS). Total score ranges from 5 to 35. A higher average score indicates a greater level of life satisfaction., 30 weeks after baseline, only for waitlist control group|Change from baseline life satisfaction of subjective well-being of caregiver at 10 weeks, Measured by the Chinese version of the World Health Organization Five Well-Being Index (WHO-5). The total raw score is multiplied by 4 to give the final score which ranges from 0 to 100, higher score indicates better well-being., 10 weeks after baseline|Change from baseline life satisfaction of subjective well-being of caregiver at 20 weeks, Measured by the Chinese version of the World Health Organization Five Well-Being Index (WHO-5). The total raw score is multiplied by 4 to give the final score which ranges from 0 to 100, higher score indicates better well-being., 20 weeks after baseline|Change from baseline life satisfaction of subjective well-being of caregiver at 30 weeks, Measured by the Chinese version of the World Health Organization Five Well-Being Index (WHO-5). The total raw score is multiplied by 4 to give the final score which ranges from 0 to 100, higher score indicates better well-being., 30 weeks after baseline, only for waitlist control group|Change from baseline family harmony and satisfaction of caregiver at 10 weeks, measured by Chinese version of 5-item Family Harmony Scale (FHS-5) (Kavikondala et al., 2016). Five related questions asking to what extent (1 to 5) the participant agrees with the statement. These questions include (1) my family functions well for all members, (2) my family's day-to-day interactions are peaceful, (3) family members accommodate each other, (4) I am proud of my family, and (5) my family is harmonious. Score 1 refers to strongly agree, score 2 refers to agree, score 3 refers to neutral, score 4 refers to disagree, and score 5 refers to strongly disagree. Total score ranges from 5 to 25. Higher score indicates worse family harmony and satisfaction., 10 weeks after baseline|Change from baseline family harmony and satisfaction of caregiver at 20 weeks, measured by Chinese version of 5-item Family Harmony Scale (FHS-5) (Kavikondala et al., 2016). Five related questions asking to what extent (1 to 5) the participant agrees with the statement. These questions include (1) my family functions well for all members, (2) my family's day-to-day interactions are peaceful, (3) family members accommodate each other, (4) I am proud of my family, and (5) my family is harmonious. Score 1 refers to strongly agree, score 2 refers to agree, score 3 refers to neutral, score 4 refers to disagree, and score 5 refers to strongly disagree. Total score ranges from 5 to 25. Higher score indicates worse family harmony and satisfaction., 20 weeks after baseline|Change from baseline family harmony and satisfaction of caregiver at 30 weeks, measured by Chinese version of 5-item Family Harmony Scale (FHS-5) (Kavikondala et al., 2016). Five related questions asking to what extent (1 to 5) the participant agrees with the statement. These questions include (1) my family functions well for all members, (2) my family's day-to-day interactions are peaceful, (3) family members accommodate each other, (4) I am proud of my family, and (5) my family is harmonious. Score 1 refers to strongly agree, score 2 refers to agree, score 3 refers to neutral, score 4 refers to disagree, and score 5 refers to strongly disagree. Total score ranges from 5 to 25. Higher score indicates worse family harmony and satisfaction., 30 weeks after baseline, only for waitlist control group|Change from baseline self-rated health of caregiver at 10 weeks, measured by a single question asking the participant to rate his or her health (Lam et al., 1998). Score 1 refers to excellent, score 2 refers to very good, score 3 refers to good, score 4 refers to fair, and score 5 refers to poor., 10 weeks after baseline|Change from baseline self-rated health of caregiver at 20 weeks, measured by a single question asking the participant to rate his or her health (Lam et al., 1998). Score 1 refers to excellent, score 2 refers to very good, score 3 refers to good, score 4 refers to fair, and score 5 refers to poor., 20 weeks after baseline|Change from baseline self-rated health of caregiver at 30 weeks, measured by a single question asking the participant to rate his or her health (Lam et al., 1998). Score 1 refers to excellent, score 2 refers to very good, score 3 refers to good, score 4 refers to fair, and score 5 refers to poor., 30 weeks after baseline, only for waitlist control group|Attendance rate, collected by class attendance record for face-to-face health education and cooking classes., During 10 weeks intervention|Home practice rate, collected by a single question in the questionnaire asking how many times older adults with MCI/dementia and their caregivers have practiced cooking at home in the last two months., 10, 20 weeks after baseline for intervention group. 10, 20 and 30 weeks after baseline for waitlist control group.|Drop-out rate, calculated by dividing the number of participants who drop-out from the study by the number of participants joining the study. If participants withdraw, reason of withdrawal will be recorded. If participants do not wish to reveal the reason of withdrawal, the project team will respect their preference., During 20 weeks after baseline for intervention group. During 30 weeks after baseline for waitlist control group.|Programme satisfaction, measured by a single question asking to what extent (1 to 10) the participant/caregiver is satisfied with the program. Score 1 refers to not satisfactory at all and score 10 refers to very satisfactory., 20 weeks after baseline for intervention group, 30 weeks after baseline for waitlist control group.|Recommendation to others, measured by a single question asking to what extent (1 to 10) the participant/caregiver is willing to recommend the programme to relatives or friends. Score 1 refers to not willing at all and score 10 refers to very willing to., 20 weeks after baseline for intervention group, 30 weeks after baseline for waitlist control group.