Table 1. Children characteristics related to perinatal mother-to-child Chikungunya virus infection, CHIMERE cohort, Reunion Island, 2008.
| Exposure group | Unexposed Uninfected children (n = 65) | Exposed Uninfected children (n = 70) | Exposed Infected children (n = 33) | P value | |||
| Maternal characteristics | |||||||
| Maternal age (μ, σ) | 29.3 | (±5.1) | 28.7 | (±6.4) | 28.1 | (±7.1) | 0.472 |
| Place of birth | 0.168 | ||||||
| Indian Ocean | 56 | (86.2) | 59 | (84.3) | 32 | (97.0) | |
| Mainland France | 7 | (10.8) | 11 | (15.7) | 1 | (3.0) | |
| Education | < 0.001 | ||||||
| Primary school | 14 | (21.5) | 34 | (48.6) | 19 | (57.6) | |
| High school | 19 | (29.2) | 21 | (30.0) | 10 | (30.3) | |
| University | 32 | (49.2) | 15 | (21.4) | 4 | (12.1) | |
| Marital status | 0.019 | ||||||
| Live alone | 13 | (20.0) | 26 | (37.1) | 15 | (45.4) | |
| Lives with partner | 52 | (80.0) | 44 | (62.9) | 18 | (54.5) | |
| Parity | 0.359 | ||||||
| 0 | 27 | (41.5) | 19 | (27.1) | 11 | (33.3) | |
| 1 | 20 | (30.8) | 31 | (44.3) | 13 | (39.4) | |
| 2 | 11 | (16.9) | 11 | (15.7) | 2 | (6.0) | |
| ≥3 | 7 | (10.8) | 9 | (12.9) | 6 | (18.2) | |
| Pre-pregnancy body mass index | 0.059 | ||||||
| <25 | 44 | (67.7) | 36 | (51.4) | 17 | (51.5) | |
| 25–29.9 | 14 | (21.5) | 12 | (17.1) | 8 | (24.2) | |
| ≥30 | 7 | (10.8) | 22 | (31.4) | 8 | (24.2) | |
| Smoking during pregnancy | 0.150 | ||||||
| Yes | 55 | (84.6) | 58 | (82.9) | 30 | (90.9) | |
| No | 9 | (13.8) | 12 | (17.1) | 1 | (3.0) | |
| 5-itemsocial deprivation score† | < 0.001 | ||||||
| Low (−1 to 0 point) | 23 | (35.4) | 8 | (11.4) | 4 | (12.1) | |
| Moderate (1 to 2 points) | 35 | (53.8) | 37 | (52.9) | 12 | (36.4) | |
| High (3 to 7 points) | 7 | (10.8) | 25 | (35.7) | 17 | (51.5) | |
Data are means, standard errors, numbers and percentages. P values are given for Kruskal-Wallis and Fisher exact tests comparing the three groups.
†
This propensity score is derived from maternal population (see table 2 of ref. [12]) assigning positive or negative points to rounded-value beta coefficients associated with categories of maternal origin, education, marital status, parity and body mass index;
‡
gestational age <37 weeks;
#
<10th percentile of AUDIPOG network growth charts;
*corrected for 24 months postnatal age.