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Table 1 Sociodemographic characteristics, maternal health, and use of acetaminophen and other analgesics during pregnancy among mothers of boys and girls in the 2004 Pelotas birth cohort who were assessed by SDQ at the follow-ups at 6 and 11 years of age

From: Is intrauterine exposure to acetaminophen associated with emotional and hyperactivity problems during childhood? Findings from the 2004 Pelotas birth cohort

Maternal characteristics Follow-up at the age of 6 years Follow-up at the age of 11 years
Boys
(N = 1812)
N (%)
Girls
(N = 1658)
N (%)
Boys
(N = 1781)
N (%)
Girls
(N = 1666)
N (%)
Age (years)
 ≤ 24 818 (45.14) 761 (45.93) 793 (44.53) 750 (45.07)
 25–29 416 (22.96) 370 (22.33) 402 (22.57) 374 (22.48)
 30–34 388 (21.41) 343 (20.70) 393 (22.07) 355 (21.33)
 ≥ 35 190 (10.49) 183 (11.04) 193 (10.84) 185 (11.12)
Educational level (years)
 0–4 268 (14.91) 250 (15.26) 257 (14.54) 248 (15.07)
 5–8 753 (41.88) 697 (42.55) 726 (41.09) 692 (42.04)
 9–11 589 (32.76) 546 (33.33) 599 (33.90) 560 (34.02)
 ≥ 12 188 (10.46) 145 (8.85) 185 (10.47) 146 (8.87)
National Economic Index
 1 (higher) 341 (18.82) 311 (18.76) 325 (18.25) 302 (18.13)
 2 362 (19.98) 366 (22.07) 355 (19.93) 363 (21.79)
 3 357(19.70) 342 (20.63) 348 (19.54) 349 (20.95)
 4 389 (21.47) 329 (19.84) 386 (21.67) 337 (20.23)
 5 (lower) 363 (20.03) 310 (19.70) 367 (20.61) 315 (18.91)
Skin color
 White 1125 (62.92) 1016 (61.80) 1106 (62.98) 1015 (61.52)
 Black 298 (16.67) 276 (16.79) 291 (16.57) 275 (16.67)
 Othera 365 (20.41) 352 (21.41) 359 (20.44) 360 (21.82)
Smoking during pregnancy
 No 1332 (73.51) 1202 (72.50) 1320 (74.12) 1212 (72.75)
 Yes 480 (26.49) 456 (27.50) 461 (25.88) 454 (27.25)
Use of alcohol during pregnancy
 No 1750 (96.58) 1605 (96.80) 1720 (96.57) 1616 (97.00)
 Yes 62 (3.42) 53 (3.20) 61 (3.43) 50 (3.00)
Parity
 1 751 (41.45) 623 (37.60) 740 (41.55) 618 (37.12)
 2 477 (26.32) 443 (26.74) 472 (26.50) 454 (27.27)
 3 or more 584 (32.23) 591 (35.67) 569 (31.95) 593 (35.62)
Pre-gestational BMI
 Underweight 75 (4.49) 69 (4.54) 75 (4.59) 66 (4.32)
 Normal weight 1025 (61.34) 909 (59.76) 996 (60.95) 914 (59.82)
 Overweight 402 (24.06) 350 (23.01) 401 (24.54) 358 (23.43)
 Obese 169 (10.11) 193 (12.69) 162 (9.91) 190 (12.43)
Mood symptoms during pregnancy
 No 1362 (75.17) 1254 (75.72) 1351 (75.86) 1268 (76.20)
 Yes 450 (24.83) 402 (24.28) 430 (24.14) 396 (23.80)
Infections during pregnancy
 No 1066 (58.96) 974 (58.89) 1061 (59.71) 975 (58.63)
 Yes 742 (41.04) 680 (41.11) 716 (40.29) 688 (41.37)
Use of acetaminophen during pregnancy
 Never 1287 (71.03) 1218 (73.46) 1259 (70.69) 1229 (73.77)
 At least once 525 (28.97) 440 (26.54) 522 (29.31) 437 (26.23)
Use of other analgesics during pregnancy
 Never 1430 (79.53) 1310 (79.25) 1402 (79.21) 1311 (78.83)
 At least once 368 (20.47) 343 (20.75) 368 (20.79) 352 (21.17)
Outcomes
 Total SDQ (score ≥ 17 pts) 212 (11.70) 161 (9.71) 288 (16.17) 192 (11.52)
 Emotional symptoms (score ≥ 5 pts) 237 (13.08) 235 (14.17) 339 (19.03) 347 (20.83)
 Conduct Problems (score ≥ 4 pts) 295 (16.28) 220 (13.27) 253 (14.21) 198 (11.88)
 Hyperactivity/inattention (score ≥ 7 pts) 288 (15.89) 193 (11.64) 367 (20.61) 189 (11.34)
 Peer relationship problems (score pts) 277 (15.29) 213 (12.85) 269 (15.10) 190 (11.40)
 Prosocial behavior (score ≤ 4 pts) 23 (1.27) 18 (1.09) 28 (1.57) 20 (1.20)
  1. aOther skin color: self-classification as brown, yellow or indigenous