Association between acute methanol poisoning and subsequent mortality: a nationwide study in Taiwan

BMC Public Health

Table 2 Comparison of the mortality risk between patients with and without methanol poisoning by Cox proportional hazard regression analysis

Variable	With methanol poisoning n = 621				Without methanol poisoning n = 6210				Crude HR (95% CI)	AHR (95% CI)^a
Variable	n	Mortality	PY	Rate	n	Mortality	PY	Rate	Crude HR (95% CI)	AHR (95% CI)^a
Overall	621	249	3105.92	80.17	6210	154	44,990.66	3.42	21.08 (17.21–25.82)	13.48 (10.76–16.88)
Age (years)
< 20	9	0	76.90	–	90	0	769.01	–	–	–
20–34	151	42	934.42	44.95	1510	9	11,770.88	0.76	53.89 (26.18–110.93)	31.75 (14.19–71.03)
35–49	259	106	1240.12	85.48	2590	33	18,397.97	1.79	41.32 (27.88–61.24)	26.68 (17.25–41.27)
50–64	149	78	659.97	118.19	1490	59	11,022.98	5.35	19.01 (13.50–26.78)	13.10 (8.93–19.25)
≥ 65	53	23	194.52	118.24	530	53	3029.83	17.49	7.24 (4.41–11.88)	8.02 (4.62–13.91)
Sex
Female	110	27	591.97	45.61	1100	15	7491.75	2.00	20.66 (10.93–39.04)	16.56 (8.12–33.76)
Male	511	222	2513.96	88.31	5110	139	37,498.91	3.71	21.43 (17.30–26.54)	13.42 (10.56–17.06)
Follow-up period
< 6 months	621	113	85.88	1315.84	6210	1	1031.09	0.97	621.91 (153.64–2517.36)	480.34 (117.55–1962.75)
6–12 months	486	11	237.92	46.23	6071	10	3002.59	3.33	13.85 (5.88–32.62)	6.09 (2.23–16.59)
≥ 1 years	464	113	2617.18	43.18	5943	135	38,911.05	3.47	12.45 (9.70–15.99)	7.70 (5.82–10.21)

AHR adjusted hazard ratio, CI confidence interval, PY person-year, CAD coronary artery disease, COPD chronic obstructive pulmonary disease
^aAdjusted for hypertension, diabetes, hyperlipidemia, stroke, CAD, COPD, renal disease, liver disease, malignancy, drug abuse, mental disorder, and monthly income

ISSN: 1471-2458