Table 4. Subgroup analysis of QOL.

Subgroups
	Studies, n	Participants, n	I 2	Q-test	Mean difference	95% CI	P
Publication date
>2017 or = 2017	2	411	0	0.97	-0.41	-4.88,4.07	0.86
<2017	2	379	53	0.14	2.21	2.41,3.81	0.16
Number of participants
<100	2	196	0	0.33	3.16	2.45,3.86	<0.00001
>100	2	594	0	0.97	-0.40	-4.05,3.24	0.83