Table 3.

Meta-analysis of common constitution proportion of DM in three regions.

Constitution	Region	Studies	Number of occurrence	Total sample size	Proportion (%)	95% CI	P
Yin-deficiency	East China	32	2472	14386	16	13%–20%	<0.01
	South China	20	944	4793	17	13%–21%	<0.01
	North China	18	961	4575	20	16%–25%	<0.01
Phlegm-dampness	East China	32	2351	14386	15	12%–19%	<0.01
	South China	19	980	4554	20	15%–26%	<0.01
	North China	18	812	4575	17	14%–20%	<0.01
Qi-deficiency	East China	31	2241	13991	11	7%–16%	<0.01
	South China	20	690	4793	13	11%–16%	<0.01
	North China	18	662	4575	13	9%–17%	<0.01