Table 2.
Associated variables with the regression equation of PEFR in Japanese children in the 51 participants separated by age
| Variables | Total | P value † | Boys | P value † | Girls | P value † | P value ‡ | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Median | (range) | Median | (range) | Median | (range) | |||||
| Mean | (SD) | Mean | (SD) | Mean | (SD) | |||||
| Height (cm) | ||||||||||
| 5‐year‐old children | (n = 33) | .007 | (n = 18) | .195 | (n = 15) | .019 | ||||
| 109.8 | (101–123) | 109.8 | (101–123) | 109.7 | (103–119) | .940 | ||||
| 109.8 | (4.5) | 109.8 | (5.1) | 109.7 | (4.0) | |||||
| 6‐year‐old children | (n = 18) | (n = 5) | (n = 13) | |||||||
| 112.5 | (106–118) | 112.6 | (106–118) | 112.4 | (106–118) | .657 | ||||
| 112.5 | (3.2) | 112.6 | (4.3) | 112.4 | (2.9) | |||||
| Best PEFR (L/min) | ||||||||||
| 5‐year‐old children | (n = 33) | .149 | (n = 18) | .793 | (n = 15) | .004 | ||||
| 141.5 | (90–250) | 161.4 | (100–250) | 117.7 | (90–150) | .0005 | ||||
| 141.5 | (38.0) | 161.4 | (39.3) | 117.7 | (17.5) | |||||
| 6‐year‐old children | (n = 18) | (n = 5) | (n = 13) | |||||||
| 149.7 | (100–190) | 155.0 | (145–175) | 147.7 | (100–190) | .654 | ||||
| 149.7 | (23.4) | 155.0 | (12.7) | 147.7 | (26.5) | |||||
Data expressed as number, the median (range), or the mean (SD).
Abbreviation: PEFR, peak expiratory flow rate.
†
Statistical difference between 5‐ and 6‐year‐old children by Mann‐Whitney U test.
‡
Statistical difference between boys and girls by Mann‐Whitney U test.