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Table 3 Egger’s test for publication bias assessment (number of studies ≥10)

From: Reproductive factors and lung cancer risk: a comprehensive systematic review and meta-analysis

Variables No. of studies P value of Egger’s test
Hormone use 38 0.498
OC use 26 0.565
Parity 24 0.041
Age at menopause 22 0.984
Age at menarche 20 0.841
Age at first birth 19 0.895
Parity with nulliparous women as reference 16 0.110
OC use duration 12 0.112
Menopause type 11 0.014
Number of pregnancy 10 0.559