Table 1. Characteristics of the participants who were present or absent during follow-up in Ribeirão Preto, SP, Brazil, 2010/13.
| Characteristics | Total no. of participants n=1356 | Absent during follow-up n=350 | Present during follow-up n=1006 | P value* |
|---|---|---|---|---|
| n (%) | n (%) | n (%) | ||
| Intrauterine growth restriction | 0.251 | |||
| No | 1226 (90.4) | 311 (88.9) | 915 (90.9) | |
| Yes | 130 (9.6) | 39 (11.1) | 91 (9.1) | |
| Gestational age (weeks) | 0.915 | |||
| ≥37 | 1234 (91.0) | 319 (91.1) | 915 (90.9) | |
| <37 | 122 (9.0) | 31 (8.9) | 91 (9.1) | |
| Newborn's gender | 0.990 | |||
| Male | 666 (49.1) | 172 (49.0) | 494 (49.1) | |
| Female | 690 (50.9) | 178 (51.0) | 512 (50.9) | |
| CES-D | 0.095 | |||
| Without depressive symptoms | 990 (77.3) | 255 (80.7) | 735 (76.2) | |
| With depressive symptoms | 291 (22.7) | 61 (19.3) | 230 (23.8) | |
| Marital status | 0.183 | |||
| Married | 509 (37.5) | 117 (33.4) | 392 (39.0) | |
| Consensual union | 648 (47.8) | 178 (50.9) | 470 (46.7) | |
| No partner | 199 (14.7) | 55 (15.7) | 144 (14.3) | |
| Mother's schooling (years) | 0.079 | |||
| ≥12 | 109 (8.1) | 29 (8.4) | 80 (8.0) | |
| 9-11 | 856 (63.3) | 203 (58.5) | 653 (65.0) | |
| ≤8 | 387 (28.6) | 115 (33.1) | 272 (27.0) | |
| Mother's age (years) | 0.004 | |||
| 20-34 | 1.017 (75.0) | 255 (72.9) | 762 (75.8) | |
| <20 | 211 (15.6) | 68 (19.4) | 143 (14.2) | |
| ≥35 | 128 (9.4) | 27 (7.7) | 101 (10.0) | |
| Economic class | 0.001 | |||
| A/B | 372 (27.9) | 93 (27.2) | 279 (28.1) | |
| C | 810 (60.8) | 191 (55.9) | 619 (62.5) | |
| D/E | 151 (11.3) | 58 (16.9) | 93 (9.4) |
The difference in the totals in relation to the reference number (n) are due to missing information. *Chi-squared test.