Fig. 4
From: A systematic review of sub-microscopic Plasmodium vivax infection
Ratios of the prevalence of P. vivax determined by microscopy to that determined by PCR. Forest plot displaying ratios (represented as closed diamonds) and 95 % confidence intervals (horizontal lines) of the prevalence of P. vivax detected by microscopy compared to that detected by PCR in 36 pair observations. The open diamond and broken vertical line represents the combined estimate from a random effects (D + L overall) meta-analysis, the combined estimate from a fixed effect (I − V overall) is also shown. The unbroken vertical line is at null value (1)