Table 2.
Model estimated between program differences across weekdays attended
| Healthy Summer Learners (n = 51) versus control (n = 43) | 21st Century Learning (n = 57) versus control (n = 43) | |||||||
|---|---|---|---|---|---|---|---|---|
| Hypothesis 1 Weekday attend vs. weekday control |
Est | 95% CI | HR | HS | Est | 95% CI | HR | HS |
| Physical activity | ||||||||
| Sedentary (min) | − 134.7 | (− 194.9, − 74.4) | − | Support | − 138.3 | (− 205.9, − 70.6) | − | Support |
| MVPA (min) | 54.8 | (34.7, 75.0) | + | Support | 22.7 | (4.5, 40.8) | + | Support |
| Total steps | 6533.3 | (5321.9, 7744.6) | + | Support | 3532.0 | (2332.6, 4731.4) | + | Support |
| Sleep | ||||||||
| Sleep duration (min) | − 13.6 | (− 39.9, 12.8) | + | Null | − 13.0 | (− 35.5, 9.4) | + | Null |
| Sleep onset | − 156.6 | (− 193.3, − 120.2) | − | Support | − 139.7 | (− 173.3, − 105.6) | − | Support |
| I-I SD for sleep onset | − 97.8 | (− 142.9, − 52.8) | − | Support | − 86.4 | (− 134.2, − 38.7) | − | Support |
| Sleep offset | − 150.2 | (− 215.0, − 86.0) | − | Support | − 150.5 | (− 211.7, − 89.8) | − | Support |
| I-I SD for sleep offset | − 99.0 | (− 129.4, − 68.5) | − | Support | − 71.6 | (− 114.2, − 29.0) | − | Support |
| Screen time | ||||||||
| Total screen time (min) | − 64.2 | (− 112.0, − 16.3) | − | Support | − 38.6 | (− 84.7, 7.5) | − | Null |
| Screen time after 20:00 h (min) | − 21.0 | (− 52.8, 10.8) | − | Null | − 21.0 | (− 46.6, 4.7) | − | Null |
| Diet | ||||||||
| Healthy foods/drinks | 0.08 | (− 0.28, 0.43) | + | Null | − 0.08 | (− 0.44, 0.28) | + | Null |
| Unhealthy foods/drinks | − 0.80 | (− 1.45, −0.16) | − | Support | − 0.39 | (− 1.05, 0.26) | − | Null |
Abbreviations: HR hypothesized relationship, HS hypothesized support (i.e., did the relationship support the hypothesis), HSL Healthy Summer Learners, 21C 21st Century Summer Learning Center, I-I intra-individual; estimates are based on multilevel mixed effects linear regressions with days nested within children, all estimates represent combined data from schools 1 and 2 (i.e., summer 2018 and 2019); bolded values indicated a statistically significant difference at p < 0.05. Support indicates statistically significant difference in the hypothesized direction or no statistically significant difference when no difference was hypothesized, Null indicates no statistically significant difference despite a hypothesis that means should differ, and Conflict indicates statistically significant difference that is contrary to the hypothesized relationship