Table 3.

Subgroup analysis

Subgroup	No. of studies (no. of MS)	Difference in pooled prevalence (95% CI)	p-value
CAM acceptance
Region
Region of the Americas	5 (842)	0.00 (-0.28, 0.27)	0.979
European Region	5 (846)	0.10 (-0.16, 0.36)	0.405
Western Pacific Region	2 (787)	-0.18 (-0.51, 0.16)	0.271
Sampling method
Random sampling	9 (2032)	-0.01 (-0.32, 0.30)	0.943
CAM usage
Region
Region of the Americas	8 (2435)	0.12 (-0.08, 0.31)	0.222
European Region	9 (1460)	0.04 (-0.16, 0.24)	0.706
Western Pacific Region	3 (883)	-0.17 (-0.45, 0.10)	0.204
Mixed region	1 (95)	-0.36 (-0.79, 0.07)	0.098
Economic levels of country
Upper-middle-income economies	2 (195)	0.24 (-0.08, 0.56)	0.133
High-income economies	18 (4583)	-0.03 (-0.32, 0.25)	0.804
Mixed-income economies	1 (95)	-0.36 (-0.79, 0.07)	0.098
Sampling method
Random sampling	15 (4101)	-0.03 (-0.25, 0.19)	0.802

Abbreviations: CI confidence interval