IMPORTMCE Prevention of obesity during childhood is critical for children in underserved populations. for whom obesity prevalence and risk of chronic disease are highest. OBJECTIVE To test the effect of a multicomponent behavioral intervention on child body mass index (BMI. calculated as weight in kilograms divided by height in meters squared) growth trajectories over 36 months among preschool-age children at risk for obesity. DESIGN. SETTING. AND PARTICIPANTS A randomized clinical trial assigned 610 parent-chiid pairs from underserved communities in Nashville. Tennessee. to a 36-month Intervention targeting health behaviors or a school -readiness control. Eligible children were between ages 3 and 5 years and at risk for obesity but not yet obese. Enrollment occurred from August 2012 to May 2014.- 36-month follow-up occurred from October 2015 to June 20i7. INTERVENTIONS The intervention in = 304 pairs) was a 36-month family-based. community-centered program. consisting of 12 weekly skills-building sessions. followed by monthly coaching telephone calls for 9 months. and a 24-month sustainability phase providing cues to action. The control (n = 305 pairs) consisted of E school-readiness sessions delivered over the 36-month study, conducted by the Nashville Public Library. The following graphic shows the body-mass index (BMI) distributions of children by randomization groups at baseline (0 months), and at several time points over the 36-month study period. Six hundred and ten (610) parent-child pairs were randomly selected from the population of interest. Three-hundred and four (304) parent-child pairs were randomized to the Intervention group, and 306 parent-child pairs were randomized to the Control group. At baseline, the average age of the children enrolled in the study was 4.2 years. Figure 2. Child BMI by Group at Each Follow-up Time Point 30 | [:1 Intervention I Control at . cu . 'D o s 25~ . . W I is | . E . | I o 2-. - - 3 ' s ., . - r - . E 2 _ i e. .l. ' ' ' ' E \"v - l I I H a El an HI BI - O _ . 10 0 3 9 12 24 36 Time. mo aboutblank 14i15 9i16i22, 5:05 PM Statistical Reasoning in Public Health I - Quiz Approximately, what is the range (minimum to maximum value) of BMI values for the children in the Control group at the end of the study (36 months)? a. 16.0 to 19.0 in. 1.5.0 to 20.0 c. 14.5 to 25.5 d. 14.0 to 24.5