Table 4.
Comparing FVC% 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 | 92.01 ± 9.33 | 84.12 ± 11.60 | 88.84 ± 5.00 | 84.58 ± 10.52 | 97.32 ± 7.77 | 70.97 ± 8.19 |
| Ethnicity-specific | 99.68 ± 10.25† | 108.63 ± 16.45 | 104.84 ± 6.59† | 114.02 ± 14.87† | 100.48 ± 8.32† | 87.38 ± 10.98† |
| Difference (95% CI) | 7.67 (7.47–7.88)* | 24.51 (22.47–26.55)* | 16.00 (13.97–18.02)* | 29.44 (28.17–30.71)* | 3.16 (2.16–4.17)* | 16.40 (14.21–18.60)* |
*p value < 0.001 according to paired t-test.
† Calculated using the relevant ethnicity-specific equation.
FVC; Forced vital capacity, NHANES; National Health and Nutrition Examination Survey.