Table 2. Maximal expiratory pressure percentiles in 7- to 10-year-old boys and girls.
| Age, years | Female | Male | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L | M | S | P3 | P10 | P25 | P50 | P75 | P90 | P97 | L | M | S | P3 | P10 | P25 | P50 | P75 | P90 | P97 | |
| 7 | -0.6 | 53.1 | 0.1 | 39.5 | 43.2 | 47.5 | 53.2 | 60.1 | 67.8 | 77.2 | 0.5 | 62.3 | 0.1 | 41.0 | 47.3 | 54.2 | 62.4 | 71.0 | 79.2 | 87.6 |
| 8 | -0.2 | 59.8 | 0.1 | 42.0 | 46.8 | 52.5 | 59.9 | 68.5 | 77.6 | 88.1 | -0.1 | 64.8 | 0.1 | 45.3 | 50.6 | 56.9 | 64.9 | 74.3 | 84.2 | 95.6 |
| 9 | -0.2 | 62.3 | 0.1 | 44.0 | 49.0 | 54.9 | 62.4 | 71.2 | 80.4 | 91.0 | -0.1 | 71.0 | 0.2 | 48.0 | 54.3 | 61.5 | 71.0 | 82.2 | 93.9 | 107.5 |
| 10 | -0.6 | 66.0 | 0.1 | 50.3 | 54.6 | 59.6 | 66.1 | 73.8 | 82.1 | 91.9 | 0.2 | 75.1 | 0.2 | 48.9 | 56.3 | 64.7 | 75.1 | 86.9 | 98.6 | 111.5 |
L: skewed value; M: mean; S: coefficient of variation; P3: percentile 3; P10: percentile 10; P: percentile 25; P50: percentile 50; P75: percentile 75; P90: percentile 90; P97: percentile 97.