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Table 3 Egger’s linear regression test to measure the funnel plot asymmetric

From: Prevalence of unprotected anal intercourse in men who have sex with men recruited online versus offline: a meta-analysis

Subgroups

Y-axis intercept: α (95% CI)

Overall effects

0.28 (-3.68 to 4.26)

European subsample

1.95 (-3.11 to 7.01)

American subsample

-2.08 (-10.59 to 6.43)

Asian subsample

8.09 (-29.29 to 45.47)

Sample size >500

-0.24 (-5.07 to 4.59)

Sample size ≤ 500

10.95 (-15.43 to 37.33)

UAI in last 6 or more months

-0.78 (-9.07 to 7.50)

UAI in last 3 months

1.11 (-3.36 to 5.58)

  1. CI, confidence interval; UAI, unprotected anal intercourse.