Table 1 Descriptive information on latent classes derived from accelerometry, overall and by age, gender, and school characteristics, among youth 6–17 years; NHANES 2003-2006
Overall | Age | Gender | In or Out of School | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
6–11 years (n = 1588) | 12–14 years (n = 1247) | 15–17 years (N = 1163 | Boys(n = 2006) | Girls(n = 1992) | In School (n = 2874) | Out of School (n = 817) | ||||||||||
Weighted % in Class | Weighted Average CPM/Day or Min/Day | Weighted % in Class | Weighted Average CPM/Day or Min/Day | Weighted % in Class | Weighted Average CPM/Day or Min/Day | Weighted % in Class | Weighted Average CPM/Day or Min/Day | Weighted % in Class | Weighted Average CPM/Day or Min/Day | Weighted % in Class | Weighted Average CPM/Day or Min/Day | Weighted % in Class | Weighted Average CPM/Day or Min/Day | Weighted % in Class | Weighted Average CPM/Day or Min/Day | |
Latent class: average CPM per day | ||||||||||||||||
Class 1- Least active | 40.9 | 323.5 | 53.8 | 471.0 | 56.1 | 324.3 | 66.9 | 293.5 | 39.4 | 370.8 | 59.8 | 331.7 | 44.4 | 316.0 | 60.8 | 390.5 |
Class 2 | 40.3 | 559.6 | 41.1 | 746.5 | 35.1 | 554.5 | 26.9 | 516.0 | 40.4 | 605.4 | 37.5 | 624.5 | 37.4 | 532.1 | 36.8 | 720.6 |
Class 3 | 16.5 | 810.0 | 5.1 | 1107.4 | 8.8 | 848.3 | 6.2 | 782.7 | 17.7 | 860.4 | 2.7 | 1055.9 | 16.3 | 774.3 | 2.4 | 1124.0 |
Class 4 - Most active | 2.3 | 1132.9 | 2.6 | 1147.0 | 1.8 | 1138.1 | ||||||||||
Latent class: percent of sedentary (0- < 100 CPM) out of total wearing time per day | ||||||||||||||||
Overall: | ||||||||||||||||
Class 1 - Most sedentary | 13.5 | 544.6 | 8.7 | 469.6 | 10.0 | 574.8 | 22.0 | 559.9 | 12.2 | 534.3 | 15.1 | 549.4 | 13.2 | 557.2 | 27.6 | 483.3 |
Class 2 | 30.1 | 455.1 | 35.1 | 391.0 | 37.0 | 478.7 | 48.9 | 486.1 | 33.3 | 441.9 | 29.5 | 466.2 | 29.5 | 476.4 | 49.9 | 363.5 |
Class 3 | 38.5 | 357.7 | 41.1 | 309.7 | 39.7 | 393.0 | 22.6 | 391.9 | 39.0 | 343.8 | 35.7 | 366.9 | 36.6 | 387.8 | 22.5 | 258.4 |
Class 4 Least sendentary | 18.0 | 259.2 | 15.1 | 227.9 | 13.3 | 306.2 | 6.6 | 289.7 | 15.5 | 240.7 | 19.7 | 275.1 | 20.7 | 292.5 | ||
Latent: class percent of light (100–2295) CPM) out of total wearing time per day | ||||||||||||||||
Class 1 - Least light activity | 12.3 | 222.6 | 14.5 | 298.9 | 31.0 | 248.6 | 38.6 | 228.9 | 10.5 | 221.9 | 13.5 | 222.3 | 16.3 | 228.8 | 29.9 | 253.5 |
Class 2 | 29.3 | 301.7 | 55.7 | 385.5 | 49.4 | 334.8 | 46.1 | 315.0 | 30.2 | 306.7 | 29.1 | 297.1 | 32.0 | 307.5 | 50.7 | 362.6 |
Class 3 | 41.8 | 384.0 | 29.8 | 456.3 | 19.6 | 410.6 | 15.3 | 413.0 | 43.4 | 390.1 | 39.1 | 376.2 | 39.1 | 385.4 | 19.4 | 455.9 |
Class 4 - Most light activity | 16.6 | 455.5 | 15.9 | 461.4 | 18.3 | 376.2 | 12.6 | 446.2 | ||||||||
Latent class: percent of MVPA (> = 2296 CPM) out of total wearing time per day | ||||||||||||||||
Class 1 Least 56.4MVPA | 59.9 | 25.0 | 56.5 | 32.8 | 66.6 | 23.0 | 80.9 | 21.7 | 56.6 | 31.7 | 69.4 | 21.6 | 61.0 | 23.9 | 68.8 | 26.5 |
Class 2 | 33.3 | 60.9 | 37.8 | 66.6 | 26.4 | 56.4 | 14.2 | 68.2 | 33.8 | 68.4 | 28.7 | 55.7 | 31.4 | 57.8 | 29.0 | 68.1 |
Class 3 | 3.1 | 89.0 | 5.8 | 110.7 | 7.0 | 98.8 | 4.9 | 64.7 | 4.4 | 87.6 | 2.0 | 99.0 | 2.9 | 96.5 | 2.2 | 118.6 |
Class 4 - Most vigorous activity | 3.6 | 109.3 | 5.1 | 112.0 | 4.7 | 99.0 | ||||||||||
Latent class: of vigorous physical activity (> = 4012 CPM) out of total wearing time per day | ||||||||||||||||
Class 1 Least vigorous activity | 76.8 | 7.1 | 76.0 | 9.4 | 89.9 | 7.8 | 87.8 | 5.4 | 75.0 | 9.5 | 81.3 | 5.4 | 79.8 | 7.1 | 84.2 | 7.9 |
Class 2 | 18.5 | 23.9 | 19.7 | 19.7 | 10.1 | 37.0 | 7.7 | 30.4 | 20.0 | 28.0 | 16.3 | 20.4 | 16.7 | 25.5 | 8.8 | 26.7 |
Class 3 Most vigorous activity | 4.7 | 47.4 | 4.4 | 49.6 | 4.7 | 38.8 | 5.0 | 50.5 | 2.4 | 44.6 | 3.5 | 50.4 | 7.0 | 37.8 | ||