Table 1 Sample distribution of respiratory symptoms and related risk factors in the Limache Cohort in 2001 and 2011
Variables | Survey year 2001 N = 1,193 | Survey year 2011 N = 772 | ||
|---|---|---|---|---|
Males | Females | Male | Female | |
N = 544 (45.6 %) | N = 649 (54.4 %) | N = 282 (36.5 %) | N = 490 (63.5 %) | |
Age (years) mean (SD) | 24.9 (1.6) | 24.7 (1.6) | 35.4 (2.2) | 35.1 (2.0) |
Smoking status (%) Never | 129 (23.7) | 253 (39.0) | 73 (21.8) | 176 (35.8) |
Ex-smokers | 48 (8.8) | 77 (11.9) | 22 (26.1) | 107 (21.8) |
Current | 367 (67.5) | 319 (49.1) | 148 (52.1) | 208 (42.4) |
Weight (kg) Median (IQR) | 70.1 (63.0–77.9) | 61.5 (54.9–70.0) | 77.9 (69.5–86.5) | 69.1 (61.4–78.3) |
Adult height (cm) Mean (SD) | 168.1 (6.1) | 156.4 (5.5) | 168.6 (4.9) | 156.9 (6.2) |
BMI (kg/m2) Median (IQR) | 24.7 (22.6–27.2) | 25.1 (22.6–28.6) | 27.3 (24.6–30.1) | 28.2 (25.4–31.6) |
Wheeze in the last 12 months | 26.3 | 28.4 | 22.7 | 23.1 |
Ever had asthma (%) | 3.1 | 5.9 | 3.9 | 7.1 |
Dr diagnosed asthma (%) | 2.6 | 5.4 | 3.9 | 7.1 |
Woken by shortness of breath in the last 12 months (%) | 10.7 | 16.5 | 14.2 | 18.0 |
Nasal allergies including rhinitis in the last 12 months (%) | 10.5 | 22.0 | 18.4 | 30.8 |
At least 1 asthma symptom and nasal allergies (n, %)a | 36 (63 %) | 82 (58 %) | 27 (52 %) | 79 (53 %) |
Positive skin prick test (SPT) to at least one allergen (data obtained in 2001) (%) | 26.7 | 26.4 | 28.7 | 26.9 |
Positive response to methacholine (data obtained in 2001) (%) | 7.9 | 16.0 | 7.5 | 16.9 |
Educational level achieved | ||||
Primary | 126 (23.1) | 120 (18.5) | 69 (24.5) | 106 (21.6) |
Secondary | 290 (53.3) | 348 (53.6) | 159 (56.4) | 269 (54.9) |
Higher | 128 (23.5) | 181 (27.9) | 54 (19.2) | 115 (23.5) |