[Retracted] Association of Pentachlorophenol with Fetal Risk of Prolonged Bradycardia: A Systematic Review and Meta-Analysis

Table 1

Basic clinical features of 15 literature were included in our study.

Study	Pregnant time (W)	Environmental pollutant	Experimental group (N)	Control group (N)	NOS score	Research type	P values
Kállay K, 2019	23.71 ± 2.2	Pentachlorophenol (PCP)	96	75	8	RCT	0.35
Duffy C, 2019	25.65 ± 3.4	Pentachlorophenol (PCP)	86	63	8	RCT	0.02
Lei H, 2020	32.12 ± 4.5	Pentachlorophenol (PCP)	118	108	8	RCT	0.04
Holmberg, 2020	27.15 ± 4.5	Pentachlorophenol (PCP)	66	60	7	RCT	0.12
Khera R, 2019	32.45 ± 3.4	Pentachlorophenol (PCP)	58	73	8	RCT	0.06
Gálvez JA, 2019	24.26 ± 1.2	Pentachlorophenol (PCP)	54	65	7	RCT	0.02
Bush B, 2018	32.45 ± 2.2	Pentachlorophenol (PCP)	80	75	9	RCT	0.01
Rau C, 2021	32.51 ± 3.0	Pentachlorophenol (PCP)	80	63	8	RCT	0.02
Zhang B, 2020	27.25 ± 4.5	Pentachlorophenol (PCP)	41	56	7	RCT	0.14
Jamal A, 2020	26.22 ± 5.2	Pentachlorophenol (PCP)	64	70	8	RCT	0.23
Mamsen, 2019	31.35 ± 2.1	Pentachlorophenol (PCP)	108	100	7	RCT	0.01
Sol CM, 2020	27.65 ± 6.0	Pentachlorophenol (PCP)	96	77	7	RCT	0.25
Pan Y, 2020	25.65 ± 2.2	Pentachlorophenol (PCP)	22	25	8	RCT	0.14
Rokoff LB, 2018	24.62 ± 3.5	Pentachlorophenol (PCP)	44	32	8	RCT	0.07
Eladak S, 2018	31.46 ± 2.0	Pentachlorophenol (PCP)	25	30	8	RCT	0.35