Sociodemographic Factors and Risk Indicators for Functional Impairment in Elderly Patients in Primary Care Settings: A Cross-sectional Study
Authors: Sandoval-Morales Alejandra , Lopez-Hernandez Daniel , Melgarejo-Estefan Emmanuel , Rocha-Gonzalez Hector Isaac , Brito-Aranda Leticia , Lara-Almaraz Diana Cecilia , Liceaga-Perez Liliana Grisel , Leon-Jimenez Rita Gabriela , Segura-Gonzalez Armando , Flores-Morales Guadalupe Jacqueline , Salinas-Palacios Perla Veronica , Mancilla-Del-Alto Berenice , Beltran-Lagunes Luis , Gamboa-Martinez Dora Orquidea , Zambrano-Molina Brenda Mariana , Alanis Yadira Guadalupe Viveros , Torres-García Edgar Esteban , Espinoza-Perdomo Abraham , Martinez-Salinas Rebeca 
Published: February 2025

Aims: To identify and describe sociodemographic characteristics of elderly subjects with functional impairment and their associated factors.
Study Design:  it was designed a descriptive, and cross-sectional study with an analytical approach.
Place and Duration of Study: Ambulatory Care Medical Unit. The study was conducted from July 1st to December 31st, 2024, with Mexican elderly patients who attended outpatient consultations in the Family Medicine Specialty and General Medicine departments at the "División del Norte" Family Medicine Clinic, ISSSTE, in Mexico City, Mexico. The data was collected from October to December, 2024.
Methodology: The data collection was conducted using six questionnaires: 1) a sociodemographic factors questionnaire, 2) the AMAI questionnaire, 3) the Barthel Index for Activities of Daily Living, 4) the Katz Index for Activities of Daily Living, 5) the Lawton and Brody for Activities of Daily Living Scale, and 6) the Geriatric Depression Scale of Yesavage. The questionnaires were interviewer-administered. The protocol was approved by two committees (The Research Committee and the Ethics Committee in Research of the Family Medicine Clinic "División del Norte"). All participants signed the informed consent form.
Results: We included 55 patients, mainly females (58.2%). The median age was higher in female patients (76.0 years old, IQR=68.5-85.75) compared to male patients (75.0 years old, IQR=70-81; p=0.767, Median Test between independent groups), but without a statistically significant difference. Females are better represented at the basic education level, while males are more inclined to hold higher education degrees and postgraduate qualifications. Males are more represented in higher socioeconomic levels, particularly Levels A/B, whereas females are more concentrated in Levels C- and E. Less than 10% of participants experienced moderate to severe functional impairment. (3.6% severe functional impairment, and 5.5% moderate functional impairment). At least 90% can bathe themselves, dress independently, use the toilet without assistance, show independence in mobility and all participants are independent in feeding themselves. For instrumental activities of daily living, less than 2% of participants exhibit maximum dependence, 85% maintain some degree of autonomy, and less than 40% achieve full independence. Sedentarism was highly prevalent (58.2%), and healthy eating habits were reported by 83.6%. Hypertension (65.5%), Type 2 Diabetes (56.4%), Overweight/Obesity (50.9%), and Dyslipidaemia (12.7%) demonstrate a significant burden of cardiovascular and metabolic diseases. The regression model indicates that the likelihood of functional dependency increases with age (beta=0.157, OR=1.170; CI 95%= 1.029-1.329, p=0.016). Additionally, elderly individuals with an alcoholism history (beta=2.359, OR=10.576; CI 95% 1.340-83.491, p=0.025) are significantly more likely to experience functional dependency. Similarly, hearing loss (beta=2.255, OR=9.536; CI 95% 1.282-70.923, p=0.028) is a risk factor of functional dependency.
Conclusion: Gender disparities are evident in education and socioeconomic status. While most participants maintain functional independence, instrumental activities of daily living present greater challenges. Sedentarism is highly prevalent, despite a majority reporting healthy eating habit.  Moreover, cardiovascular and metabolic diseases impose a significant burden on diseases. Functional dependency is strongly associated with increasing age, an history, and hearing loss as well, emphasising the need for targeted interventions to promote healthy ageing and prevent disability.