Table 1.
Baseline Characteristics of the Hutterites with Measured YKL-40 Levels.*
| Characteristic | Males (N = 280) | Females (N = 352) | Total (N = 632) |
|---|---|---|---|
| Age — yr | |||
| Mean | 32.7 | 33.8 | 33.3 |
| Range | 6–92 | 6–88 | 6–92 |
| YKL-40 — ng/ml | 96.7±4.7 | 88.6±3.5 | 92.2±2.9 |
| Asthma — no./no. tested (%) | 36/251 (14.3) | 27/295 (9.2) | 63/546 (11.5) |
| Bronchial hyperresponsiveness — no./no. tested (%) | 63/251 (25.1) | 58/295 (19.7) | 121/546 (22.2) |
| Atopy — no./no. tested (%) | 124/263 (47.1) | 116/320 (36.3) | 240/583 (41.2) |
| Serum IgE — IU | 151.2±21.7 | 49.8±5.7 | 94.9±10.3 |
| FEV1 — % of predicted value | 100.2±1.0 | 101.2±0.8 | 100.8±0.6 |
| FVC — % of predicted value | 105.5±0.9 | 106.5±0.8 | 106.0±0.6 |
| FEV1:FVC — % of predicted value | 79.6±0.5 | 82.2±0.5 | 81.0±0.4 |
| FEF25–75 — % of predicted value | 3.7±0.1 | 3.1±0.1 | 3.3±0.1 |
*
Plus–minus values are means ±SE. Data for serum IgE were available for 610 Hutterites (271 males and 339 females). Data for forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC), the FEV1:FVC ratio, and the forced expiratory flow between 25% and 75% of the FVC (FEF25–75) were available for 599 Hutterites (272 males and 327 females).