Table 2.

Multimorbidity and all-cause mortality

	No LTCs	1 LTC	2 LTCs	≥3 LTCs	P trend
No. of deaths	760	1809	1146	297
No. of person-years	47,741.92	91,206.57	54,098.89	11,975.57
aMortality rate	15.92	19.83	21.18	24.80
		OR (95% CI)	OR (95% CI)	OR (95% CI)
bModel1	Reference	1.35 (1.23,1.47)	1.56 (1.42,1.72)	1.96 (1.69,2.27)	< 0.001
cModel2	Reference	1.39 (1.27,1.53)	1.63 (1.47,1.80)	2.04 (1.76,2.36)	< 0.001
dModel3	Reference	1.45 (1.32,1.59)	1.72 (1.55,1.90)	2.15 (1.85,2.50)	< 0.001

LTCs Long-term conditions, OR denotes odds ratio and 95% CI denotes 95% confidence interval

^aPer 1000 person-years

^bModel 1 is adjusted for age (< 75 or ≥ 75), sex (female or male) and marital status (living with partner or living without partner)

^cModel 2 is adjusted for covariates in model 1 plus smoking status (never, current or previous), alcohol status (never, occasionally or daily) and physical activity (never, occasionally or daily)

^dModel 3 is adjusted for covariates in model 2 plus body mass index (< 18.5, 18.5–24.9, 25–29.9, 30–34.9, 35–39.9 or ≥ 40)