Table 3.

Weather and severe acute respiratory syndrome cases in Hong Kong: model 1

Parameter	d.f.	Estimate	Standard Error	Wald 95% confidence limits		χ2	P‐value
Intercept	1	−62.3058	21.2327	−103.921	−20.6905	8.61	0.0033
Maximum temperature	1	−0.1619	0.0233	−0.2076	−0.1161	48.17	<0.0001
Air pressure	1	0.0679	0.0208	0.0272	0.1086	10.69	0.0011
Relative humidity	1	0.0016	0.0108	−0.0195	0.0228	0.02	0.8800

d.f., degrees of freedom.