Supplemental Table 2.

Subgroup analyses of self-reported daytime napping and risk of all-cause mortality.

Group	Number of studies	Event/total number	Pooled risk ratio	95% CI
Region
Asia	2	10,981/70,208	1.12	1.01–1.26
No Asia	5	4,616/27,955	1.19	1.05–1.34
Follow-up duration
≤11 years	3	3,665/13,039	1.08	0.89–1.32
>11 years	4	12,746/85,124	1.16	1.08–1.25
Sample size
<5000	4	3,812/6,559	1.05	0.89–1.24
>5000	3	12,599/91,604	1.19	1.14–1.26
Nap duration
<60 min	3	2,777/21,312	1.10	0.92–1.32
>60 min	3	2,777/21,312	1.15	1.04–1.27
Gender
Men	3	6,676/30,347	1.15	1.09–1.21
Women	4	6,632/49,821	1.15	0.92–1.43