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Table 2 Pooled hazard ratios (HRs) for OS according to subgroup analyses

From: Prognostic value of lymphocyte-to-monocyte ratio in ovarian cancer: a meta-analysis

Subgroup

No. of studies

No. of patients

HR (95% CI)

P value

Heterogeneity

I2(%)

Ph

Overall

8

5368

0.63 (0.50–0.80)

< 0.001

65.9

0.005

Ethnicity

 Asian

2

422

0.46 (0.25–0.87)

0.016

73.3

0.023

 Caucasian

5

4946

0.80 (0.71–0.89)

< 0.001

8.2

0.360

Disease stage

 Early

2

536

0.61 (0.20–1.82)

0.377

0

0.705

 Mixed

6

4832

0.63 (0.49–0.80)

< 0.001

75.3

0.001

Treatment

 Surgery

4

4878

0.81 (0.74–0.89)

< 0.001

0

0.883

 Mixed

4

482

0.45 (0.27–0.73)

0.001

62.3

0.047

Cut-off for LMR

  ≥ 3

5

4930

0.56 (0.35–0.88)

0.011

76.6

0.002

  <  3

3

438

0.65 (0.41–1.04)

0.075

41.7

0.180

Analysis method

 Univariate

2

185

0.46 (0.27–0.79)

0.005

0

0.488

 Multivariate

6

5183

0.67 (0.53–0.86)

0.001

65.9

0.005