Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Other |
Moderate-to-vigorous physical activity (MVPA; Caregivers)-AIM 2 |
The ActiGraph GT3X-plus accelerometer (www.theactigraph.com) will record acceleration counts from which minutes of MVPA per day will be estimated (analysis software available). Data collection procedure for caregivers will be similar to those employed for preschoolers, but different count thresholds will be used: moderate (2690-6166 counts/60 seconds) and vigorous PA (= 6167 counts/60 seconds). Sixty-second increments with counts = 2690 will be summed to determine minutes of MVPA. |
Change from baseline moderate-to-vigorous physical activity at 17 weeks |
|
Other |
Diet quality (Caregivers)-AIM 2: Block Fruit-Vegetable-Fiber Screener |
The ten-item Block Fruit-Vegetable-Fiber Screener will assess the caregivers' diet quality. This survey provides estimates for intake of food groups including total fruit/vegetable servings, dietary fiber (mg), Vitamin C (mg), magnesium (mg), and potassium (mg). The scale is significantly correlated with the full Block survey (r = 0.71). The sum of the 10 items, with a range from 0 to 50, will be calculated, with a higher score indicating a greater fruit, vegetable, and bean intake. |
Change from baseline diet quality at 17 weeks |
|
Other |
Screen time (Caregivers)-AIM 2 |
Caregivers' screen time will also be assessed by two questions from the National Health and Nutrition Examination Survey (NHANES)-Physical Activity and Physical Fitness Survey. The sum of the two questions (min-max: 0-24 hours/day) will be used to describe preschoolers' screen time, with a higher score indicating more screen time. |
Change from baseline screen time at 17 weeks |
|
Other |
Proportion of overweight and obesity and body mass index (Caregivers)-AIM 2 |
BMI will be calculated based on weight (kg)/height (m2). Data collection procedures for caregivers will be similar to those employed for preschoolers. |
Change from baseline proportion of overweight and obesity and body mass index at 17 weeks |
|
Other |
Knowledge (Caregivers)-AIM 2 |
The 25-item Parental Knowledge Scale will be used to assess parental knowledge on preschoolers' dietary intake and physical activity. The 2-point Likert scale has been used with low-income parents. The sum of the 25 items, with a range from 0 to 25, will be calculated, with a higher sum score indicating greater knowledge on healthy eating and physical activity. |
Change from baseline knowledge at 17 weeks |
|
Other |
Feeding practice skill (Caregivers)-AIM 2 |
Parent feeding practice skill will be assessed by the 33-item Child Feeding Questionnaire. The Child Feeding Questionnaire was developed to evaluate parental beliefs, attitudes, and practices regarding child feeding, with a focus on obesity proneness in children aged 2-11 years old. The 5-point Likert questionnaire, with good reliability and validity, includes seven factors: perceived responsibility, perceived caregiver weight, perceived child weight, concerns about child weight, pressure to eat, restriction, and monitoring. The mean score of the items for each factor, with a range from 1 to 5, will be calculated, with a higher mean score indicating greater perceived responsibility, perceived caregiver weight, perceived child weight, concerns about child weight, pressure to eat, restriction, and monitoring, respectively. |
Change from baseline feeding practice skill at 17 weeks |
|
Other |
Self-efficacy (Caregivers)-AIM 2 |
The 20-item Parental Self-Efficacy Scale, measuring caregivers' confidence to support their preschoolers' healthy eating and physical activity, will assess caregiver self-efficacy. The 10-point Likert scale has shown good reliability with Cronbach's alphas ranging from 0.72 to 0.94. The mean score of the 20 items, with a range from 0 to 10, will be calculated, with a higher mean score indicating greater self-efficacy. |
Change from baseline self-efficacy at 17 weeks |
|
Other |
Parental support (Caregivers)-AIM 2 |
The 12-item Parental Support Scale for Eating Habits and Physical Activity will measure support for the child. The 6-point Likert scale has very good reliability with Cronbach's alphas ranging from 0.83 to 0.87. The mean score of the 12 items, with a range from 1 to 6, will be calculated, with a higher mean score indicating greater parental support. |
Change from baseline parental support at 17 weeks |
|
Other |
Parenting practices (Caregivers)-AIM 2 |
The 32-item Parenting Style and Dimensions Questionnaire will measure parenting practices. The 5-point Likert questionnaire is assessing three parenting styles: authoritative, authoritarian, and permissive. The questionnaire has good reliability with Cronbach's alphas ranging from 0.64 to 0.91. The mean score of items for each parenting style, with a range from 1 to 5, will be calculated, with a higher mean score indicating greater authoritative, authoritarian, or permissive parenting style, respectively. |
Change from baseline parenting practices at 17 weeks |
|
Other |
Home environment (Caregivers)-AIM 2 |
The 20-item Family Nutrition and Physical Activity (FNPA) screening tool will assess the home environment. This 4-point Likert screening tool is used to assess home obesogenic environments and practices, including family meals, family eating practices, food choices, beverage choices, restriction/reward, screen time, healthy environment, family activity, child activity, and family schedule/sleep routine. The sum score of the 20 items, with a range from 20 to 80, will be calculated, with a higher sum score indicating a healthier home environment. |
Change from baseline home environment at 17 weeks |
|
Other |
Head Start center environment |
Each center supervisor and two teachers will complete the Environment and Policy Evaluation and Observation-Self-Report (EPAO-SR) to assess each Head Start center environment. The EPAO-SR includes a Director General Survey, a Staff General Survey, and a Staff Daily Survey. Sum score will be calculated to describe overall nutrition and physical activity environment, with a higher sum score indicating a healthier center environment. The total nutrition score will range from 0 to 21, while the physical activity score will range from 0 to 39. |
Change from baseline center environment at 17 weeks |
|
Primary |
Moderate-to-vigorous physical activity (MVPA; Preschoolers)-AIM 1 |
The ActiGraph GT3X accelerometer (www.theactigraph.com) will record acceleration counts from which minutes of MVPA per day will be estimated (analysis software available). Each caregiver-preschooler dyad will receive the accelerometers at the same time and data collectors will explain to both caregiver and preschooler how to wear the accelerometers. Preschoolers' caregivers will be instructed to return monitors either at the Head Start center or via mail using using the provided prepaid envelope after the seventh day. Data will be downloaded to the same computer used to initialize monitors. Initial analysis will use 15-sec. epochs and the following count thresholds: moderate (420-841 counts/15 seconds) and vigorous PA (= 842 counts/15 seconds). Fifteen-second increments with counts = 420 will be summed to determine minutes of MVPA. |
Change from baseline Moderate-to-vigorous physical activity at 17 weeks |
|
Secondary |
Diet quality (Preschoolers)-AIM 1 |
Preschoolers' dietary intake at home will be assessed by three non-consecutive 24-hour dietary recalls (one weekend day; two weekdays; randomly selected) with their caregivers over 2-3 weeks. The Minnesota Nutrition Data System for Research (NDSR) will be used to assess diet quality and obtain a healthy eating index score. The Project Manager will be trained at the University of Minnesota Nutrition Coordinating Center for two days and certified. The Project Manager will train interviewers to collect data individually from each caregiver via telephone. To aid in assessment of portion sizes, two-dimensional food models and measuring guides will be provided to caregivers at Head Start centers. Preschoolers' dietary intake at the Head Start center will be assessed by the dietary observation system on snacks and lunch on two selected weekdays (similar to the two weekdays selected for the 24-hour recall). The observed diet data will be entered into the NDSR for analysis. |
Change from baseline diet quality at 17 weeks |
|
Secondary |
Screen time (Preschoolers)-AIM 1 |
Preschoolers' screen time will be assessed by two questions from the National Health and Nutrition Examination Survey (NHANES)-Physical Activity and Physical Fitness Survey. The two questions ask caregivers about the number of hours per day their preschooler watches television or videos and uses a computer or plays games. The scale has good reliability with coefficients ranging from 0.63 to 0.84. The sum score of the two questions (min-max: 0-24 hours/day) will be used to describe preschoolers' screen time, with a higher score indicating more screen time. Caregivers will complete the survey. |
Change from baseline screen time at 17 weeks |
|
Secondary |
Proportion of overweight and obesity and body mass index z-score (Preschoolers)-AIM 1 |
Data collectors will measure each preschooler (bulky clothing, shoes, and things in pockets removed) in a private room. In accordance with NHANES measurement protocol, height without shoes will be measured to the nearest 0.1 cm. with a Shorr Board (Weigh and Measure, LLC, Olney, MD), and weight in kg. will be measured to the nearest 0.1 kg. using a Seca model 874 portable electronic scale (Seca Corp., Columbia, MD). Two measurements will be taken for height and weight. If the two differ by < 0.5 cm. and < 0.5 kg., they will be averaged to determine the final height and weight, respectively. If the two measurements differ by = 0.5 cm. or by = 0.5 kg, a third one will be taken. If the 3rd measurement is = 0.5 cm or = 0.5 kg. different from the previous two measurements, process will be repeated and another data collector will measure. BMI percentile and BMI z-score for age and sex will be determined via SAS program for CDC Growth Charts. |
Change from baseline proportion of overweight and obesity and body mass index z-score at 17 weeks |
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