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Fig. 3 | BMC Medicine

Fig. 3

From: Antimalarial drugs for preventing malaria during pregnancy and the risk of low birth weight: a systematic review and meta-analysis of randomized and quasi-randomized trials

Fig. 3

All the combined antimalarial drugs compared to no use of antimalarial drugs and risk of LBW stratified by level of drug resistance and gravidity. Each study is displayed as a square and horizontal line representing the relative risk together with its confidence interval. The area of the square represents the weight that the study contributes to the meta-analysis. The combined relative risk and its confidence interval are represented by the diamond. The P value after I2 represents chi-square test for heterogeneity. DerSimonian and Laird were used to calculate the random effect model. G1–G2 indicates first and second pregnancy; G3 and more indicates two or more previous pregnancies. Test for subgroup difference between each level of drug resistance (P <0.01). Test for subgroup difference between each stratum of gravidity (P = 0.102). CI, confidence interval; LBW, low birth weight; RR, relative risk

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