Table 4 Post-bronchodilator FEF25–75 (l/s.) and FEV1% predicted in participants without restriction, with risk factors, symptoms and limitations caused by chronic airflow obstruction in participants without evidence of restriction)
From: Chronic airflow obstruction in Tanzania – a cross-sectional study
Exposure | N | % of n | Median FEF25–75 (IQR), post bronchodilator (L/s.) | Δ FEF25–75 (L/s.) | p | Median FEV1% PRED (IQR) | Δ FEV1%PRED | p | |
|---|---|---|---|---|---|---|---|---|---|
Smoking | Current or former smoker | 155 | 28.1 | 3.1 (2.15–3.76) | 0.2 | 0.4 | 96.44 (87.39–104.12) | 1.23 | 0.59 |
Never smoker | 397 | 71.9 | 2.9 (2.05–3.65) | 95.21 (86.14–106.34) | |||||
Exposure to dusts and fumes at workplace | Exposure | 442 | 80.1 | 2.97 (2.03–3.7) | 0.19 | 0.78 | 95.15 (85.94–104.42) | 3.74 | 0.07 |
No exposure | 110 | 19.9 | 2.78 (2.2–3.63) | 98.88 (89.31–107.82) | |||||
Cooking | Regular cooking | 317 | 57.4 | 2.74 (1.93–3.47) | 0.43 | <0.01 | 95.19 (85.61–105.79) | 0.2 | 0.12 |
No regular cooking | 231 | 41.8 | 3.16 (2.34–3.99) | 95.39 (88.62–105.37) | |||||
Biomass fuels for cooking | Cooking with wood or coal | 472 | 85.5 | 2.84 (1.96–3.61) | 0.53 | <0.01 | 95.15 (85.62–104.93) | 1.33 | 0.39 |
Cooking with gas or electricity | 47 | 8.5 | 3.36 (2.5–3.99) | 96.47 (72.93–106.29) | |||||
History of active TB | History of active TB | 71 | 12.9 | 2.07 (1.5–3.12) | 0.95 | <0.01 | 96.2 (87.48–106.34) | 6.34 | <0.01 |
No history of active TB | 481 | 87.1 | 3.02 (2.23–3.71) | 89.86 (77.11–101.86) | |||||
Chronic bronchitis (chronic cough and sputum) | Yes | 46 | 8.3 | 2.41 (1.44–3.49) | 0.58 | 0.02 | 90.73 (74.02–103.34) | 4.86 | 0.02 |
No | 506 | 91.7 | 2.99 (2.1–3.67) | 95.6 (86.89–105.86) | |||||
Having ever refrained from taking a job because of shortness of breath | Yes | 87 | 15.8 | 2.43 (1.56–3.28) | 0.6 | <0.01 | 95.25 (81.58–103.25) | 0.28 | 0.14 |
No | 465 | 84.2 | 3.02 (2.17–3.71) | 95.53 (86.99–105.96) |