Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Vitamin D Dose-Response Study to Establish Dietary Requirements in Infants
Brief Summary: The research team is comprised of an expert nutrition scientist and a pediatrician with expertise in endocrinology. Both have world-class experience in assessing bone mass in infancy. Together they have designed a study to determine how much dietary vitamin D is needed to optimize health in infants. This is important since many infants are born with vitamin D deficiency. At present the dosage of vitamin D that is optimal for infant health is unclear and recent research suggests that vitamin D status very early in life has long lasting effects on bone mass and other health issues. Therefore, in a group of healthy infants, this research team will test which dosage of vitamin D is needed to achieve optimal vitamin D status. Optimal vitamin D status will be based on growth, biomarkers of vitamin D and bone status in blood and also general health. The infants will all be breastfed and begin the study at about 2 weeks of age. At 3 months intervals over the first year of life, each infant will be measured for growth, duration of breastfeeding and supplement use plus have a bone density scan to determine changes in bone growth. The data will be helpful to guide health care professionals in providing the best care possible for their infants. It will also be important to the health of populations since dietary recommendations for vitamin D are used to guide fortification of foods and development of evidence based policy around nutrient recommendations and their implementation.


Options:
A: Arm Label: Cash transfer; Type: EXPERIMENTAL; Interventions: Other: Cash transfer | Arm Label: Food transfer; Type: EXPERIMENTAL; Interventions: Other: Food transfer | Arm Label: Food and cash transfer; Type: EXPERIMENTAL; Interventions: Other: Food and cash transfer | Arm Label: Cash transfer + BCC; Type: EXPERIMENTAL; Interventions: Other: Cash transfer, Behavioral: Behavior Communication Change (BCC) | Arm Label: Food transfer + BCC; Type: EXPERIMENTAL; Interventions: Other: Food transfer, Behavioral: Behavior Communication Change (BCC) | Intervention Type: OTHER; Name: Cash transfer; Assigned to Arm(s): Cash transfer, Cash transfer + BCC | Intervention Type: OTHER; Name: Food transfer; Assigned to Arm(s): Food transfer, Food transfer + BCC | Intervention Type: OTHER; Name: Food and cash transfer; Assigned to Arm(s): Food and cash transfer | Intervention Type: BEHAVIORAL; Name: Behavior Communication Change (BCC); Assigned to Arm(s): Cash transfer + BCC, Food transfer + BCC
B: Arm Label: intervention 1; Type: EXPERIMENTAL; Interventions: Behavioral: classroom curriculum, Behavioral: In-service training for Head Start teachers/aides, Behavioral: Training for Head Start food service, Behavioral: Family intervention component, Behavioral: Food source, Behavioral: Health care providers, Behavioral: CHILE Head Start Intervention | Arm Label: control 2; Type: NO_INTERVENTION; Interventions: N/A | Intervention Type: BEHAVIORAL; Name: classroom curriculum; Assigned to Arm(s): intervention 1 | Intervention Type: BEHAVIORAL; Name: In-service training for Head Start teachers/aides; Assigned to Arm(s): intervention 1 | Intervention Type: BEHAVIORAL; Name: Training for Head Start food service; Assigned to Arm(s): intervention 1 | Intervention Type: BEHAVIORAL; Name: Family intervention component; Assigned to Arm(s): intervention 1 | Intervention Type: BEHAVIORAL; Name: Food source; Assigned to Arm(s): intervention 1 | Intervention Type: BEHAVIORAL; Name: Health care providers; Assigned to Arm(s): intervention 1 | Intervention Type: BEHAVIORAL; Name: CHILE Head Start Intervention; Assigned to Arm(s): intervention 1
C: Arm Label: Low intensity arm; Type: ACTIVE_COMPARATOR; Interventions: Behavioral: Dietary, physical activity and sleeping | Arm Label: High intensity arm; Type: EXPERIMENTAL; Interventions: Behavioral: Dietary, physical activity and sleeping | Intervention Type: BEHAVIORAL; Name: Dietary, physical activity and sleeping; Assigned to Arm(s): High intensity arm, Low intensity arm
D: Arm Label: 1; Type: EXPERIMENTAL; Interventions: Drug: Vitamin D | Arm Label: 2; Type: EXPERIMENTAL; Interventions: Drug: Vitamin D | Arm Label: 3; Type: EXPERIMENTAL; Interventions: Drug: Vitamin D | Intervention Type: DRUG; Name: Vitamin D; Assigned to Arm(s): 1 | Intervention Type: DRUG; Name: Vitamin D; Assigned to Arm(s): 2 | Intervention Type: DRUG; Name: Vitamin D; Assigned to Arm(s): 3

Answer: D