Table 1.
Note.—Unless otherwise indicated, data are means ± standard deviation. FEV1 = forced expiratory volume after 1 second, TLC = total lung capacity.
There was no significant difference in the age of men compared with that of women in cohort 1 (P = .31), but there was a significant difference in cohort 2 (P = .005) and the overall cohort (P = .006). Comparison made with t test.
Data are percentages, with numerator and denominator in parentheses.
Data are medians, with the range in parentheses.