Table 2.

Regression analysis of POA clinical variables.

	Univariate		Multivariate
	P	OR (95% CI)	P	OR (95% CI)
Age	0.56	1.0 (1.0–1.0)
<34 years		1.0
34–60 years	0.98	1.0 (0.4–2.2)
>60 years	0.76	0.9 (0.4–2.0)
Female sex	0.0028	2.8(1.4–5.6)	0.0087	2.7(1.3–5.5)
ASA ≥ Ⅲ	0.24	1.8 (0.7–4.6)
Unconfirmed drug allergy label	0.83	1.1 (0.5–2.5)
Unconfirmed food allergy label	5.0E-4	4.8(2.0–11.5)	3.0E-4	5.9(2.3–15.1)
Prior surgery	0.0031	3.3(1.5–7.4)	0.0012	4.0(1.7–9.4)
Immune disorder	0.34	1.6 (0.6–4.2)
Hypertension	0.26	1.7 (0.7–4.2)
Coronary heart disease	0.16	2.4 (0.7–8.3)
Antihypertensive medicine	0.32	1.7 (0.6–4.6)

P < 0.05 is shown in bold. Variables with P values less than 0.05 in univariate regression analyses were involved in multivariate regression analyses and received covariate-adjusted P values