Figure 3. Result of Egger’s bias assessment for the prevalence of
free-living amoebae in swimming pools and recreational waters.
Based on the random-effects model meta-analysis, the pooled prevalence
of FLA in swimming pools and recreational waters was 40.89% (95% CI =
33.97– 48.00) (Figure 4). The included studies demonstrated a strong
heterogeneity (Q = 1900.4, df = 74, I2 = 96.1%, P
< 0.0001).