Table 2.
Mean value (± Standard Deviation) for lung function measures and covariates, by sex and zygosity.
| Men | Women | Opposite sexed pairs (n = 42) | ||||
|---|---|---|---|---|---|---|
| MZ (n = 28) | DZ(n = 14) | MZ(n = 65) | DZ(n = 27) | Men | Women | |
| Age | 60.5 ± 9.0 | 59.8 ± 7.3 | 59.1 ± 8.3 | 60.1 ± 9.6 | 58.5 ± 8.7 | 58.5 ± 8.8 |
| Height | 178.7 ± 5.7 | 180.1 ± 5.3 | 164.4 ± 6.2 | 163.9 ± 5.5 | 178.3 ± 5.5 | 165.0 ± 4.8 |
| Pack yrs1 | 11.6 ± 17.6 | 22.4 ± 20.2 | 9.5 ± 14.0 | 13.6 ± 16.9 | 15.5 ± 16.2 | 11.9 ± 16.5 |
| VC in % pred. | 100.64 ± 13.00 | 97.86 ± 15.83 | 111.99 ± 15.42 | 108.89 ± 13.94 | 101.97 ± 13.04 | 113.81 ± 14.90 |
| FEV1 in % pred. | 92.97 ± 14.91 | 89.70 ± 18.37 | 98.96 ± 16.60 | 98.21 ± 15.77 | 96.27 ± 15.53 | 102.68 ± 14.99 |
| DLco2 in % pred. | 95.06 ± 18.44 | 92.45 ± 19.58 | 87.11 ± 16.08 | 79.97 ± 14.54 | 91.83 ± 18.99 | 89.33 ± 15.97 |
Multiple regression was used in order to test for differences in the mean levels of age, height, packyears and lung function measures (VC, FEV1 and DLco) between the zygosity groups. Adjustment for sex was made for height and lung function measures. 1Packyears at examination. 2 n pairs MZ male = 28, DZ male = 15, MZ female = 66, DZ female = 25, OS = 39.