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Table 1 Sociodemographic and reproductive characteristics of the study population

From: Validity of the posttraumatic stress disorders (PTSD) checklist in pregnant women

Characteristic All Diagnostic interview PCL-C screening only P valuea
(N = 3289) (N = 633) (N = 2656)
n % n % n %
Age (yr)b 28.2 ± 6.3 28.2 ± 6.1 28.2 ± 6.3 0.99
Age (yr)
 18–20 169 5.1 29 4.6 140 5.3 0.68
 20–29 1836 55.8 367 58.0 1469 55.3
 30–34 692 21.0 128 20.2 564 21.2
  ≥ 35 591 18.0 109 17.2 482 18.1
Education (yr)
  ≤ 6 143 4.3 25 3.9 118 4.44 0.75
 7–12 1787 54.3 339 53.6 1448 54.5
  > 12 1349 41.0 267 42.2 1082 40.7
Mestizo 2475 75.3 481 76.0 1994 75.1 0.65
Married/living with a partner 2658 80.8 518 81.8 2140 80.6 0.50
Employed 1515 46.1 307 48.5 1208 45.5 0.19
Access to basic food
 Hard 1630 49.6 302 47.7 1328 50.0 0.31
 Not very hard 1657 50.4 331 52.3 1326 49.9
Difficulty in paying for medical care
 Hard 1740 52.9 316 49.9 1424 53.6 0.11
 Not very hard 1541 46.9 315 49.8 1226 46.2
Nulliparous 1609 48.9 333 52.6 1276 48.0 0.04
Unplanned pregnancy 1892 57.5 352 55.6 1540 58.0 0.28
Gestational age at interview (wk)b 9.3 ± 4.3 9.6 ± 3.4 9.2 ± 4.7 0.02
Any lifetime sexual or physical abuse by intimate partnerc
 No 2096 63.7 442 69.8 1654 62.3 <0.001
 Yes 1181 35.9 188 29.7 993 37.4
Any childhood physical or sexual abused
 No 937 28.5 190 30.0 747 28.1 0.38
 Yes 2308 70.2 436 68.9 1872 70.5
  1. Due to missing data, percentages may not add up to 100%
  2. aFor continuous variables, p value was calculated using Student’s t test; for categorical variables, p value was calculated using either Chi-square test or Fisher’s exact test
  3. bmean ± standard deviation
  4. cIntimate partner abuse assessed using the Demographic Health Survey Questionnaires and Modules: Domestic Violence Module [48] and the WHO Multi-Country Study on Violence Against Women [68]
  5. dExperiences of childhood physical and sexual abuse assessed using Childhood Physical and Sexual Abuse Questionnaire [47]