Table 1.
Number of different values per person among all counts/minute, overall and by categories for youth and adults; NHANES 2003–2006
| Youth 6–17 years (n = 4028) | Adults > =18 years (n = 7931) | |||||||
|---|---|---|---|---|---|---|---|---|
| Mean (SE) | 25th percentile | 50th percentile | 75th percentile | Mean (SE) | 25th percentile | 50th percentile | 75th percentile | |
| Overall, counts/minute | 1381.4 (5.5) | 1127.0 | 1360.0 | 1623.0 | 1101.2 (3.7) | 874.0 | 1085.0 | 1313.0 |
| 0 to 99 counts/minute | 99.7 (0.0) | 100.0 | 100.0 | 100.0 | 99.8 (0.0) | 100.0 | 100.0 | 100.0 |
| 100 to 499 counts/minute | 351.2 (0.6) | 336.0 | 361.0 | 377.0 | 352.4 (0.5) | 338.0 | 364.0 | 380.0 |
| 500 to 999 counts/minute | 305.6 (1.1) | 259.0 | 314.0 | 360.0 | 284.0 (1.0) | 226.0 | 296.0 | 353.0 |
| 1000 to 1999 counts/minute | 328.0 (1.9) | 236.0 | 320.0 | 416.0 | 240.5 (1.6) | 136.0 | 225.0 | 329.0 |
| 2000 to 2999 counts/minute | 149.0 (1.2) | 94.0 | 137.0 | 195.0 | 75.4 (0.8) | 24.0 | 58.0 | 107.0 |
| 3000 to 3999 counts/minute | 72.1 (0.7) | 36.0 | 63.0 | 100.0 | 29.8 (0.4) | 5.0 | 16.0 | 41.0 |
| 4000 to 4999 counts/minute | 35.3 (0.5) | 13.0 | 27.0 | 48.0 | 16.1 (0.3) | 2.0 | 6.0 | 19.0 |
| > = 5000 counts/minute | 42.5 (0.8) | 10.0 | 25.0 | 56.0 | 17.4 (0.6) | 1.0 | 4.0 | 15.0 |
SE = standard error.