Figures
- Fig. 1.—
Odds ratios (ORs) of answering “yes” to the question: “Do you ever have trouble with your breathing?” ▪: unadjusted; •: adjusted forced expiratory volume in one second (FEV1); ▵: adjusted FEV1/forced vital capacity (FVC); ▾: adjusted % predicted (% pred); □: adjusted absolute difference.
- Fig. 2.—
Odds ratios (ORs) of answering “yes” to the question: “Have you had shortness of breath following strenuous activity in the last year?” ▪: unadjusted; •: adjusted forced expiratory volume in one second (FEV1); ▵: adjusted FEV1/forced vital capacity (FVC); ▾: adjusted % predicted (% pred); □: adjusted absolute difference.
- Fig. 3.—
Odds ratios (ORs) of answering “yes” to the question: “Have you had wheezing or whistling in your chest at any time in the last 12 months?” ▪: unadjusted; •: adjusted forced expiratory volume in one second (FEV1); ▵: adjusted FEV1/forced vital capacity (FVC); ▾: adjusted % predicted (% pred); □: adjusted absolute difference.
- Fig. 4.—
Odds ratios (ORs) of reporting a cough for ≥3 months of the year. ▪: unadjusted; •: adjusted forced expiratory volume in one second (FEV1); ▵: adjusted FEV1/forced vital capacity (FVC); ▾: adjusted % predicted (% pred); □: adjusted absolute difference.
Tables
- Table 1
Prevalence (%) of reported respiratory symptoms
Symptom question Prevalence Have you had an attack of shortness of breath that came on following strenuous activity at any time during the last 12 months? 25.7 Do you ever have trouble with breathing? 19.5 Have you had wheeze or whistling in your chest at any time in the last 12 months? 24.0 Do you usually cough during the day, or at night, during the winter, and do you usually cough like this for as much as 3 months of the year? 9.3 - Table 2
Number of individuals in each measurement category
Absolute FEV1 L N Absolute difference from predicted L n % pred n FEV1/FVC % n >4.50 204 >0 1368 >100.0 1371 >85 842 >4.25 138 >−0.2 464 >95.0 355 >80 691 >4.00 152 >−0.4 312 >90.0 313 >75 566 >3.75 187 >−0.6 186 >85.0 176 >70 293 >3.50 215 >−0.8 119 >80.0 137 >65 112 >3.25 281 >−1.0 65 >75.0 87 >59 68 >3.00 296 >−1.4 56 >70.0 60 ≤59 61 >2.75 269 ≤−1.4 63 >54.5 71 >2.50 259 ≤54.5 63 >2.25 225 >2.00 155 >1.75 125 >1.40 67 ≤1.40 60 -
FEV1: forced expiratory volume in one second
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% pred: % predicted
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FVC: forced vital capacity
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