Table 2.

Prevalence of needlestick injuries in each subgroup

Variables	Groups	Number of studies	Sample size	Prevalence	95% confidence interval	Heterogeneity
						P	Q	I2
Gender	Male	11	1571	42	26–58	98.4	619.07	0.0001
	Female	11	2609	47	36–58	97.4	380.2	0.0001
Tool	Researcher-made	39	12,780	43	36–50	98.6	2769.03	0.0001
	Other	5	3325	36	29–43	93.7	63.55	0.0001
Sampling method	Random	9	3231	42	29–55	98.4	506.97	0.0001
	Census	15	5835	43	34–52	98.3	840	0.0001
	Other	6	795	50	38–62	92.1	63.09	0.0001
	Unknown	14	6244	39	29–48	98.8	1090.25	0.0001
Type of hospital	Teaching	41	14,392	43	37–49	98.6	2917.03	0.0001
	Military	3	1713	34	30–38	20	2.50	0.286