Table 3.

Pooled prevalence of BADL disabilities and subgroup analyses.

Variables	Classification	Number of Studies	Number of Results	Event Rate (%)	95% CI (%)	Heterogeneity I2 (%)	Q-Value	p-Value
Pooled prevalence		56	62	20.5	17.7–23.3	99.9	45,852.90
Gender	Male	37	41	19.4	16.4–22.4	99.7	3.95	0.047
	Female	37	41	25.1	20.3–29.9	99.8
Age group	60–69	17	17	7.3	5.7–8.9	98.6	111.60	<0.001
	70–79	17	17	13.1	10.4–15.9	98.4
	≥80	29	33	30.0	26.2–33.9	99.6
Region	Eastern China	15	15	16.8	13.5–20.1	99.3	10.45	0.005
	Northern China	6	8	12.9	9.7–16.1	99.2
	Other regions *	16	16	24.4	18.0–30.7	99.5
Hukou	Urban	14	18	22.6	16.1–29.2	99.9	0.00	0.944
	Rural	16	20	22.4	17.4–27.3	99.9
Survey year	2009 and before *	8	14	21.7	14.2–29.1	99.9	0.78	0.678
	2010–2014	25	25	21.3	17.6–25.1	99.7
	2015–2019	20	20	18.9	14.3–23.4	99.8

* To avoid the limitation of insufficient studies, we merged Central China, Southwest China, and Northwest China into a group called “Other regions”. In addition, the studies published in 2009 and before were merged into one group.