Prevalence and impact of diabetes in patients with COVID-19 in China

Table 2 Pooled prevalence of diabetes among coronavirus disease 2019 patients in China

Item	Number of studies	Sample size	Diabetes	Prevalence(95%CI, %)	I2	P values
						Heterogeneity	Subgroup difference
Overall	23	49564	1573	10 (7-15)	97%	< 0.01	-
Subgroup analysis
Sample size							0.002
≤ 100	10	574	55	9 (6-11)	28%	0.14
100-200	8	1252	178	14 (11-16)	60%	0.02
> 200	5	49588	1340	7 (4-9)	94%	< 0.0001
Location							< 0.0001
Wuhan, China	13	1556	222	14 (12-16)	35%	0.12
Outside of Wuhan, China	8	1746	119	7 (6-8)	0%	0.79
China (all cities)	2	46262	1432	5 (0-11)	99%	< 0.0001
Age group							< 0.0001
≤ 50 yr	10	3358	257	7 (6-8)	10%	0.27
> 50 yr	12	1534	214	13 (11-16)	45%	0.05
ICU admission							0.94
ICU	2	112	20	15 (4-26)	47%	0.17
Non-ICU	2	1519	118	14 (3-35)	78%	0.03
Severity							< 0.0001
Severe	8	553	99	17 (14-20)	0%	0.92
Non-severe	7	2190	143	6 (5-8)	41%	0.05
Death							0.02
Death	5	1146	120	30 (13-46)	89%	< 0.0001
Survival	5	45508	1191	8 (2-15)	99%	< 0.0001

ICU: Intensive care unit.