Table 4.

Logistic regression of heat-related illness risk.

Item	Crude OR (95%CI)	Adjusted OR (95%CI)
Age	1.023 (1.006–1.040)	1.051 (1.025–1.077)
Working day	0.982 (0.963–1.001)	0.985 (0.964–1.006)
Duration of career in construction	0.999 (0.982–1.015)	0.977 (0.954–0.999)
Hypertension	1.211 (0.679–2.158)	1.166 (0.531–2.561)
Diabetes	1.037 (0.404–2.660)	1.384 (0.481–3.983)
Site 2	2.214 (1.453–3.374)	2.485 (1.410–4.381)
Sub and sub-subcontractors	2.216 (1.464–3.354)	1.554 (0.950–2.543)
Maximum skin temperature	1.143 (1.027–1.272)	1.207 (1.065–1.367)
Energy consumption	1.001 (0.999–1.002)	1.001 (0.999–1.002)
Heart rate after warming up	1.024 (1.012–1.036)	1.033 (1.019–1.047)
Maximum WBGT (°C)
25–28	4.479 (0.556–36.098)	2.964 (0.355–24.784)
28–31	2.465 (0.321–18.932)	1.062 (0.131–8.640)
> 31	4.910 (0.666–36.208)	1.351 (0.165–11.088)
WBGT difference in a day	1.075 (0.936–1.234)	1.396 (0.17–11.452)

Italic font describes significant difference (p < 0.05).

OR odds ratio, CI confidence interval.