Table 4—

Prevalence of chest symptoms by fuel exposure

Gas+electricity+oilGas+coalGas+coal+woodAny other fuel+cornstalk or manureTotal
Wheeze2.1 (1.9–2.4)1.9 (1.8–2.0)2.8 (2.5–3.0)2.9 (2.7–3.1)2.3 (2.2–2.4)
Chest tightness1.2 (1.0–1.4)1.1 (1.0–1.2)2.3 (2.1–2.5)2.4 (2.2–2.6)1.6 (1.5–1.6)
Nocturnal SOB1.1 (0.9–0.3)1.0 (0.9–1.1)1.4 (1.2–1.5)1.7 (1.5–1.9)1.2 (1.2–1.3)
Nocturnal cough2.3 (2.0–2.6)1.8 (1.7–1.9)2.3 (2.1–2.5)3.4 (3.2–3.6)2.3 (2.2–2.3)
Asthma attack1.6 (1.3–1.8)1.6 (1.5–1.7)2.1 (1.9–2.3)2.5 (2.4–2.7)1.9 (1.8–1.9)
Asthma medication1.0 (0.8–1.2)1.2 (1.1–1.3)1.7 (1.5–1.9)1.7 (1.6–1.9)1.4 (1.3–1.4)
Chronic cough1.4 (1.1–1.6)1.2 (1.2–1.3)1.9 (1.7–2.1)2.5 (2.3–2.7)1.6 (1.6–1.7)
Chronic phlegm1.1 (0.9–1.3)1.2 (1.1–1.3)1.9 (1.7–2.0)2.6 (2.4–2.7)1.6 (1.5–1.6)
  • Data are presented as percentages (95% confidence interval)

  • SOB: shortness of breath