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Table 1 PCR results compared to histology findings

From: Pooled PCR testing strategy and prevalence estimation of submicroscopic infections using Bayesian latent class models in pregnant women receiving intermittent preventive treatment at Machinga District Hospital, Malawi, 2010

Histological status Overall Peripheral Placental
  PCR (+)/total (%) Positive/total (%) Positive/total (%)
Active 28/39 (71.8%) 13/17 (76.5%) 15/22 (68.2%)
Acute 16/22 (72.7%) 7/10 (70%) 9/12 (75%)
Chronic 12/17 (70.6%) 6/7 (85.7%) 6/10 (60%)
Negative 24/578 (4.2%) 17/250 (6.8%) 7/328 (2.1%)
Past infection 10/140 (7.1%) 7/74 (9.5%) 3/66 (4.5%)
No infection 14/438 (3.2%) 10/176 (5.7%) 4/262 (1.5%)
  1. Proportion of PCR positives in each histologic classification is presented for each sample type analysed: overall and by blood sources (peripheral or placental). Histologic results are separated into active infection (acute and chronic) and negative (past infection or no infection).