Total # of FEV 1 -FVC measurements | 11943 | ||||||||
Less males | 11280 | ||||||||
Less individuals of unknown height | 10885 | ||||||||
Groups | |||||||||
H | A | C | AC | S | SA | SC | SAC | ||
Less individuals of unknown, inconsistent, etc., status | 4735 | 3742 | 177 | 19 | 25 | 672 | 18 | 54 | 28 |
Less multiple visits | 4489 | 3742 | 126 | 17 | 19 | 491 | 17 | 50 | 27 |
Less half twins (for twins in the same group) | 4403 | 3742 | 111 | 17 | 18 | 428 | 17 | 45 | 25 |