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Table 1 Sociodemographic, obstetric, and clinical characteristics of the pregnancy cohort at enrolment, Kenya, 2017–2019

From: Prevalence of microcephaly and Zika virus infection in a pregnancy cohort in Kenya, 2017–2019

Characteristic N  
Age, years mean (SD) 2312 28.4 (± 5.6)
Education level completed 2278  
 Primary and below, n (%)   592 (26.0)
 Secondary, n (%)   1016 (44.6)
 Tertiary, n (%)   670 (29.4)
Occupation 2312  
 Employed, n (%)   953 (41.2)
 Self-employed, n (%)   366 (15.8)
 Unemployed, n (%)   992 (42.9)
Gestational age in weeks, median [IQR] 2312 20.0 [15.1–24.1]
Previous pregnancies 2309  
 0, n (%)   691 (29.9)
 1 to 3, n (%)   1415 (61.3)
 Above 3, n (%)   203 (8.8)
Previous pregnancies’ outcome 1618  
 Pregnancy loss   528 (32.6)
 Newborn with birth defects   19 (1.2)
Any chronic diseasea, n (%) 2312 143 (6.2)
Systolic blood pressure (mmHg)b, mean (SD) 2309 109.3 (11.7)
Diastolic blood pressure (mmHg)c, mean (SD) 2307 67.9 (9.3)
Hemoglobin level (g/dl)d, mean (SD) 2145 11.2 (2.7)
HIV infected, n (%) 2160 343 (15.9)
HIV infected and using ARVs, n (%) 343 310 (92.3)
Positive VDRL for syphilis, n (%) 2163 29 (1.3)
  1. IQR interquartile range, SD standard deviation, VDRL Venereal Disease Research Laboratory, ARV antiretroviral drugs
  2. aChronic disease included asthma, hypertension, diabetes, and epilepsy
  3. bNormal range 90–120
  4. cNormal range 60–80
  5. dNormal range 9.5–15