The methodological quality assessment of systematic reviews/meta-analyses of chronic prostatitis/chronic pelvic pain syndrome using AMSTAR2

Table 5 Univariable analysis of potential factors affecting the methodologic quality of interventional SRs/MAs of CP/CPPS (N = 38)

Characteristics	N (%) (N = 38)	Total (N = 38)			P value
Characteristics	N (%) (N = 38)	M (N = 2)	L (N = 2)	CL (N = 34)	P value
Publication year					1.000
Before 2010	7 (18.4)	0 (0.0)	0 (0.0)	7 (100.0)
After 2010	31 (81.6)	2 (6.5)	2 (6.5)	27 (87.1)
Continent					0.017
Asia	23 (60.5)	0 (0.0)	1 (4.3)	22 (95.7)
Europe	5 (13.2)	2 (40.0)	0 (0.0)	3 (60.0)
North America	8 (21.1)	0 (0.0)	0 (0.0)	8 (100.0)
South America	2 (5.3)	0 (0.0)	1 (50.0)	1 (50.0)
PRISMA					0.773
No	14 (36.8)	1 (7.1)	0 (0.0)	13 (92.9)
Yes	24 (63.2)	1 (4.2)	2 (8.3)	21 (87.5)
Preregistration					0.014
No	24 (63.2)	0 (0.0)	0 (0.0)	24 (100.0)
Yes	14 (36.8)	2 (14.3)	2 (14.3)	10 (71.4)
Funding support					1.000
No	18 (47.4)	1 (5.6)	1 (5.6)	16 (88.9)
Yes	20 (52.6)	1 (5.0)	1 (5.0)	18 (90.0)
RCT enrollment					1.000
non-RCTs	1 (2.6)	0 (0.0)	0 (0.0)	1 (100.0)
RCTs	29 (76.3)	2 (6.9)	2 (6.9)	25 (86.2)
RCTs and non-RCTs	8 (21.1)	0 (0.0)	0 (0.0)	8 (100.0)
Whether CDSR					0.076
non-CDSR	33 (86.8)	1 (3.0)	1 (3.0)	31 (93.9)
CDSR	5 (13.2)	1 (20.0)	1 (20.0)	3 (60.0)
Meta-analysis					0.574
Without	7 (18.4)	1 (14.3)	0 (0.0)	6 (85.7)
With	31 (81.6)	1 (3.2)	2 (6.5)	28 (90.3)

ISSN: 1471-2288