Table 3.
Comparing FEV 1 % of never smokers calculated using NHANES III versus ethnicity-specific equations
| Korean (n = 183) | All migrants (n = 88) | East Asian (n = 5) | Southeast Asian (n = 63) | Central Asian (n = 8) | South Asian (n = 12) | |
|---|---|---|---|---|---|---|
| NHANES III | 93.59 ± 9.32 | 85.33 ± 10.90 | 89.84 ± 5.75 | 86.07 ± 10.22 | 94.38 ± 8.67 | 73.51 ± 8.22 |
| Ethnicity-specific | 99.26 ± 10.06† | 103.04 ± 12.48 | 102.1 ± 6.94† | 105.27 ± 12.76† | 94.03 ± 8.65† | 97.62 ± 11.36† |
| Difference (95% CI) | 5.67 (5.43–5.90)* | 17.70 (16.25–19.15)* | 12.27 (10.70–13.84)* | 19.20 (18.45–19.96)* | −0.35 (−1.16–0.47) | 24.11 (22.04–26.18)* |
* p value < 0.001 according to paired t-test.
† Calculated using the relevant ethnicity-specific equation.
FEV; Forced expiratory volume, NHANES; National Health and Nutrition Examination Survey.