Table 1 Baseline (spring 2015), year 1 (spring 2016), and year 2 (spring 2017) characteristics of the afterschool programs and children in attendance
| Â | Baseline (Spring 2015) | End of 1st year (Spring 2016) | End of 2nd year (Spring 2017) |
|---|---|---|---|
Child Characteristics | |||
 Sample Size (N) | 1117 | 1173 | 1228 |
 Boys (percentage) | 56% | 53% | 52% |
 Age (years, SD) | 7.7 ± 1.7 | 8.0 ± 1.7 | 7.8 ± 1.7 |
 Race/Ethnicity (percentage) | |||
  Black | 31% | 36% | 37% |
  Hispanic | 3% | 2% | 2% |
  Other | 5% | 3% | 5% |
  White | 62% | 60% | 56% |
 Height (cm, SD) | 128.5 ± 11.3 | 131.8 ± 12.2 | 130.4 ± 38.1 |
 Weight (lbs, SD) | 67.1 ± 23.3 | 72.0 ± 24.4 | 73.1 ± 30.6 |
Afterschool Program Schedule | |||
 Total Program Length (mins/day, SD) | 195 ± 29 | 193 ± 32 | 200 ± 18 |
  Snack | 11% ± 5% | 11% ± 5% | 11% ± 5% |
  Academics/Enrichment | 26% ± 11% | 37% ± 12% | 33% ± 9% |
  Other | 6% ± 4% | 5% ± 4% | 11% ± 8% |
  Physical Activity | 57% ± 16% | 47% ± 16% | 45% ± 13% |
   Free Play | 58% ± 26% | 64% ± 26% | 65% ± 29% |
   Organized | 43% ± 26% | 36% ± 26% | 35% ± 29% |
Afterschool Program Characteristics | |||
 Households in Poverty (percent, SD) | 13% ± 6 |  |  |
 Receive State of Federal Reimbursement for Snack | 35% |  |  |
 Serve a Hot Meal (percent of ASPs) | 10% |  |  |
 Receive State of Federal Reimbursement for Meal | 10% |  |  |
 Available Program Space (ft2, SD) | |||
  Indoor | 9128 ± 4386 |  |  |
  Outdoor | 137,755 ± 87,095 |  |  |
 Location | |||
  YMCA | 44% |  |  |
  School | 56% |  |  |
Accelerometer Estimates of Physical Activity | |||
 Sample with valid accelerometer data (N) | 1078 | 1160 | 1166 |
 Activity Intensity (mins/day, SD) | |||
  Sedentary | 64.3 ± 24.6 | 60.1 ± 22.6 | 55.8 ± 19.9 |
  Light Physical Activity | 41.2 ± 17.9 | 43.6 ± 15.1 | 43.0 ± 13.7 |
  Moderate Physical Activity | 11.0 ± 6.6 | 11.6 ± 6.1 | 11.8 ± 5.3 |
  Vigorous Physical Activity | 10.4 ± 7.7 | 10.7 ± 7.2 | 12.0 ± 7.3 |
  Moderate-to-Vigorous Physical Activity | 21.4 ± 13.5 | 22.3 ± 12.4 | 23.8 ± 11.8 |
  Percent Meeting MVPA 30 min/day Standard | 25.9% | 26.5% | 30.0% |
 Total Time in Attendance | 127.0 ± 34.2 | 126.0 ± 33.5 | 122.6 ± 30.0 |