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Table 4 – Comparison of the children with Zika related microcephaly and children exposed without microcephaly, included in the analysis versus losses to follow-up, in relation to biological, clinical and radiological characteristics

From: Pediatric neurodevelopment by prenatal Zika virus exposure: a cross-sectional study of the Microcephaly Epidemic Research Group Cohort

Biological, clinical and radiological characteristics Microcephaly Children born to PCR + mothers
Losses
(n = 19)
Included
(n = 134)
Losses*
(n = 42)
Included
(n = 94)
Sex, N (%) Female 7 (42.1) 24 (41.4) 19 (45.2) 47 (50.0)
Male 11 (57.9) 34 (58.6) 23 (54,8) 47 (50.0)
Prematurity, Weeks of Gestational Age, N (%) < 37 2 (20.0) 20 (15,0) 4 (22.2) 6 (7.9)
≥ 37 3 (60.0) 109 (85,0) 14 (77.8) 70 (92.1)
Missing 14 5 24 18
Birthweight, g, N(%) < 2500 2 (25.0) 38 (29.9) 4 (15.4) 5 (7.1)
2500–2999 3 (37.5) 50 (39.4) 8 (30.8) 14 (20.0)
≥ 3000 3 (37.5) 39 (30.7) 14 (53.8) 51 (72.9)
Missing 11 7 16 24
Mother’s age Years   25.5 (22–34) 28 (21–31) 25 (20–32)
Image abnormalities Yes 2 (33.6) 109 (89.3) 3 (23.1) 5 (11.6)
No 4 (66.7) 13 (10.7) 13 (76.9) 38 (88.4)
Missing 13 12 26 51
  1. *11 children born to PCR + mothers plus 31 children whose mothers were not tested PCR