Table 4.
Odds of being in a given quintile* of inactivity, MVPA, and VPA in 8th grade for those in the same quintile at 6th grade, relative to those in any other quintile at 6th grade.
| Odds ratio (95% CI) for 8th grade quintile | |||||
|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | |
| Accelerometry | |||||
| Inactivity | 2.86 (2.01, 4.08) | 1.89 (1.32, 2.72) | 1.32 (0.90, 1.93) | 1.58 (1.09, 2.30) | 3.26 (2.28, 4.67) |
| MVPA | 3.38 (2.37, 4.83) | 1.47 (1.01, 2.14) | 1.37 (0.94, 1.99) | 1.38 (0.94, 2.01) | 3.64 (2.55, 5.20) |
| VPA | 3.59 (2.53, 5.10) | 1.22 (0.83, 1.79) | 1.39 (0.96, 2.03) | 1.22 (0.83, 1.79) | 3.45 (2.42, 4.93) |
| Self-report | |||||
| Inactivity | 1.84 (1.29, 2.63) | 1.01 (0.68, 1.49) | 1.12 (0.78, 1.63) | 1.56 (1.07, 2.29) | 2.44 (1.66, 3.58) |
| MVPA | 1.80 (1.30, 2.47) | 1.39 (0.92, 2.09) | 1.36 (0.88, 2.09) | 1.27 (0.84, 1.89) | 2.63 (1.83, 3.79) |
| VPA | 1.74** (1.31, 2.31) | 0.90 (0.47, 1.72) | 1.33 (0.89, 1.99) | 2.23 (1.54, 3.23) | |
*
Logistic mixed models: logit [8th grade quintile] = 6th grade quintile+ (Site + School within Site included as random effects).
**
Quintiles 1 and 2 combined due to 44% of girls reporting zero blocks of VPA at 8th grade