Table 1.
General and respiratory characteristics of participants.
| Variable | Males (n = 542) | Females (n = 645) |
|---|---|---|
| Age and anthropometric variables | ||
| Age (years) Mean (SD) | 24.6 (1.4) | 24.7 (1.5) |
| Adult weight (kg) Median (IQR) | 70.1 (63.0 to 77.9) | 61.5 (54.9 to 70.0) |
| Adult height (cm) Mean (SD) | 168.1 (6.1) | 156.3 (5.5) |
| BMI (kg/m2) Median (IQR) | 24.7 (22.6 to 27.2) | 25.1 (22.6 to 28.6) |
| Weight at birth (g) Mean (SD) | 3184 (488.2) | 3192 (508.0) |
| Measurements of lung function (Mean (SD)) | ||
| FEV1 (L) † | 4.12 (0.53) | 3.09 (0.38) |
| FEV1 as % of predicted value for age, height and sex | 105.2 (10.91) | 105.3 (10.69) |
| FVC (L) | 4.78 (0.63) | 3.53 (0.44) |
| FVC as % of predicted value for age, height and sex | 104.9 (7.3) | 103.2 (8.5) |
| FEV1/FVC | 0.86 (0.047) | 0.88 (0.048) |
| Bronchial hyper-responsiveness (BHR) as positive response to methacholine challenge (16 mg/mL) % | 6.3 | 15.5 |
| Wheeze in the last 12 months (%) | 26.3 | 28.4 |
| Ever had asthma (%) | 3.1 | 5.9 |
| Dr diagnosed asthma (%) | 2.6 | 5.4 |
| 12 years of full time education (%) | 50.0 | 50.0 |
| Number of household belongings (as estimation of SES) (N (%)) | ||
| 0 or 1 | 75 (13.8) | 93 (14.3) |
| 2 | 164 (30.2) | 223 (34.4) |
| 3 | 173 (31.9) | 211 (32.5) |
| 4 or 5 | 131 (24.1) | 122 (18.8) |
† Highest of five measurements.