Fig. 7

Cases reduction related to the interventions compared to no-interventions for the mobile and migrant populations. Effect size (ES) indicates odds ratio and its 95% confidence interval (CI). Each included study is represented by squares at the estimated point of effect. The horizontal lines through the square illustrate the length of the CI. The longer the lines, the wider the CI, the less reliable the study results. A subtotal or the overall combined result is represented by a diamond with its centre indicating the pooled point estimate while its width representing the CI for the pooled data. The wider the width of the diamond, the less reliable the pooled results