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Table 4 Logistic regression analysis for potential risk factors associated with abnormal indexes of coal miners in 2016

From: Effects of occupational exposure to dust on chest radiograph, pulmonary function, blood pressure and electrocardiogram among coal miners in an eastern province, China

Variable Radiograph PF BP ECG
  OR(95% CI) OR(95% CI) OR(95% CI) OR(95% CI)
Sex
 Female 1.00 1.00 1.00 1.00
 Male 1.28 (0.92–1.78) 1.06 (0.80–1.41) 1.01 (0.86–1.19) 1.00 (0.85–1.18)
Age, years
 ≤ 30 1.00 1.00 1.00 1.00
 31–40 4.05 (1.92–8.54)* 0.88 (0.52–1.49) 1.19 (0.94–1.51) 1.92 (1.48–2.50)*
 41–50 2.71 (1.24–5.90)* 1.30 (0.75–2.25) 1.49 (1.14–1.94)* 2.13 (1.60–2.84)*
 > 50 1.75 (0.75–4.09) 1.16 (0.62–2.18) 1.44 (1.02–2.03)* 1.98 (1.39–2.81)*
Years of dust exposure
 ≤ 10 1.00 1.00 1.00 1.00
 11–20 1.26 (0.97–1.64) 2.93 (2.27–3.79)* 1.82 (1.60–2.08)* 0.89 (0.77–1.03)
 > 20 1.70 (1.33–2.17)* 2.64 (2.09–3.34)* 1.29 (1.12–1.48)* 0.98 (0.86–1.11)
Smoking
 No 1.00 1.00 1.00 1.00
 Yes 1.20 (0.83–1.72) 1.92 (1.34–2.71)* 0.93 (0.61–1.50) 1.16 (0.95–1.42)
Drinking
 No 1.00 1.00 1.00 1.00
 Yes 2.20 (1.61–3.00)* 1.26 (0.97–1.64) 1.11 (0.95–1.31) 1.20 (1.03–1.40)*
Working types
 Ground auxiliary 1.00 1.00 1.00 1.00
 Tunneling 0.97 (0.65–1.47) 0.91 (0.57–1.43) 2.05 (1.77–2.38)* 1.01 (0.85–1.19)
 Coal extraction 2.16 (1.57–2.97)* 2.43 (1.88–3.14)* 2.15 (1.78–2.59)* 1.27 (1.04–1.56)*
 Pulverized coal 2.56 (2.02–3.24)* 0.95 (0.73–1.23) 1.75 (1.51–2.04)* 2.37 (2.07–2.70)*
 Underground auxiliary 1.80 (1.41–2.30)* 1.50 (1.21–1.85)* 2.67 (2.35–3.05)* 1.23 (1.07–1.42)*
Size of mine
 Large 1.00 1.00 1.00 1.00
 Medium 0.95 (0.70–1.28) 1.75 (1.34–2.28)* 1.88 (1.61–2.20)* 1.09 (0.93–1.29)
 Small 0.90 (0.61–1.17) 1.88 (1.39–2.55)* 1.95 (1.66–2.29)* 1.14 (0.96–1.36)
  1. PF Pulmonary function, BP Blood pressure, ECG Electrocardiogram
  2. *P < 0.05