Table 4.

The sensitivity analysis results of HKA

Study excluded	Remaining samples (KA/MA)	Overall effect			Heterogeneity
		MD	95% CI	p value	I2 (%)	p value
Calliess [33]	366/361	0.02	− 0.60 to 0.63	0.95	70	0.0004
Dossett [19]	425/420	− 0.29	− 1.15 to 0.56	0.50	87	< 0.00001
Dossett [20]	422/417	− 0.28	− 1.14 to 0.57	0.52	87	< 0.00001
Kaneda [35]	458/456	− 0.18	− 0.98 to 0.62	0.66	87	< 0.00001
Laende [32]	442/438	− 0.24	− 1.09 to 0.60	0.58	87	< 0.00001
MacDessi [31]	396/393	− 0.31	− 1.18 to 0.56	0.48	86	< 0.00001
Matsumoto [30]	436/431	− 0.46	− 1.11 to 0.20	0.18	75	< 0.0001
Matsumoto [29]	436/431	− 0.13	− 0.96 to 0.71	0.76	86	< 0.00001
McEwen [28]	426/421	− 0.18	− 1.04 to 0.68	0.68	87	< 0.00001
Yeo [26]	436/431	− 0.22	− 1.04 to 0.68	0.62	87	< 0.00001
Young [24]	417/411	− 0.30	− 1.15 to 0.56	0.50	87	< 0.00001

MD mean difference