[Retracted] Relationship between Platelet-to-Lymphocyte Ratio and Lymphocyte-to-Monocyte Ratio with Spontaneous Preterm Birth: A Systematic Review and Meta-analysis

Table 3

LMR subgroup analysis.

Variables	No. of studies	SMD (95% CI)		Heterogeneity		Model
				(%)	pH
Country
Asia	4	0.34 (-0.31, 0.98)	0.305	93.9	<0.001	Random
Non-Asia	1	0.41 (-0.05, 0.86)	0.079	—	—	—
Case number
<100	3	0.44 (0.19, 0.68)	<0.001	81.1	0.005	Random
≥100	2	0.11 (-0.07, 0.29)	0.215	97.1	<0.001	Random
CBC test
Upon admission	2	0.70 (0.39, 1.01)	<0.001	67.7	0.079	Random
Other	3	0.10 (-0.07, 0.26)	0.249	94.3	<0.001	Random
Study design
Prospective case control	2	0.18 (-0.12, 0.47)	0.233	40.2	0.196	Fixed
Retrospective case control	3	0.44 (-0.41, 1.29)	0.306	95.8	<0.001	Random