Table 1.
Baseline characteristics of participating maternal-child dyads (N = 106) recruited between June 2016 and September 2017 at the IFF-Fiocruz in Rio de Janeiro, Brazil.
| ZIKV-exposed Dyads (N = 56) | ZIKV-unexposed Dyads* (N = 59) | P valuea | ||
|---|---|---|---|---|
| Mean (SD) or N (%) | ||||
| Mother | Age, years | 30.1 (6.6) | 29.5 (7.2) | 0.686 |
| Pre-pregnancy Body Mass Index, kg/m2 | 26.6 (5.9) | 24.0 (4.8) | 0.013 | |
| Pre-pregnancy Weight | 0.044 | |||
| Normal Weight, BMI (18.5–24.9) | 21 (42) | 34 (66.7) | ||
| Overweight, BMI (25–29.9) | 16 (32) | 10 (19.6) | ||
| Obese, BMI ≥30 | 13 (26) | 7 (13.7) | ||
| Missing | 6 (10.7) | 8 (13.5) | ||
| Weight Gain in Pregnancy, kg | 11.8 (6.3) | 13.0 (4.8) | 0.280 | |
| Gestational Hypertension | 0.250 | |||
| No | 45 (80.3) | 52 (88.1) | ||
| Yes | 11 (19.7) | 7 (11.9) | ||
| Gestational Diabetes | 0.329 | |||
| No | 51 (91.1) | 56 (94.9) | ||
| Yes | 5 (8.9) | 3 (5.1) | ||
| Trimester of ZIKV Infection | — | — | ||
| First | 13 (23.2) | — | ||
| Second | 35 (62.5) | — | ||
| Third | 8 (14.3) | |||
| Neonate, at Birth | Sex | 0.778 | ||
| Male | 29 (51.8) | 29 (49.2) | ||
| Female | 27 (48.2) | 30 (50.8) | ||
| Gestational Age, weeks | 38.5 (1.2) | 39.1 (1.3) | 0.008 | |
| Premature | 0.235 | |||
| No | 54 (96.4) | 59 (100) | ||
| Yes | 2 (3.6) | 0 (0) | ||
| Small for Gestational Age | 0.417 | |||
| No | 52 (92.8) | 53 (89.8) | ||
| Yes | 4 (7.2) | 6 (10.2) | ||
| Low Birthweight | 0.473 | |||
| No | 54 (96.4) | 58 (98.3) | ||
| Yes | 2 (3.6) | 1 (1.7) | ||
aP values are from independent sample t-tests and Chi-squared tests as appropriate.
*Presumptively unexposed infants.