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. 2015 Jun 17;10(6):e0129615. doi: 10.1371/journal.pone.0129615

Table 1. Characteristics of the study participants (N = 1574).

Characteristics n (%)
Maternal age in years Mean (SD) 31.45 (4.43)
Education 1
High School 360 (23.0)
Postsecondary 1207 (77.0)
Household income
≥$80,000 1084 (71.6)
<$80,000 431 (28.4)
Marital status
Married/Common-law 1498 (95.5)
Single 70 (4.5)
Ethnicity
White/Caucasian 1292 (82.4)
Other 276 (17.6)
Time in Canada
Born in Canada/Lived in Canada for ≥5 years 1424 (91.1)
Lived in Canada for less than 5 years 139 (8.9)
Gravidity
Primigravida 548 (35.1)
Multigravida 1012 (64.9)
Parity
Primiparous 681 (47.7)
Multiparous 747 (52.3)
Pre-pregnancy BMI
Underweight (BMI< 18.50 kg/m2) 54 (3.5)
Normal weight (BMI 18.50–24.99 kg/m2) 937 (60.9)
Overweight (BMI 25.00–29.99 kg/m2) 343 (22.3)
Obese/Morbidly obese (BMI ≥30.00 kg/m2) 204 (13.3)
Pregnancy complications 2
Yes 201 (14.1)
No 1228 (85.9)
Onset of labour
Spontaneous onset 971 (72.1)
Induction of labour 376 (27.9)
Mode of delivery
Spontaneous vaginal 1013 (70.9)
Assisted vaginal delivery (vacuum and/or forceps) 36 (2.5)
Emergency or elective caesarean section 380 (26.6)
Obstetrical analgesia
Epidural/spinal 743 (52.0)
No analgesia 686 (48.0)
Gestational age (weeks), mean (SD) 38.86 (1.89)
Birth weight (grams), mean (SD) 3357.5 (547.7)
Breastfeeding status
Did not breastfeed 60 (3.8)
Breastfed <24 weeks 339 (21.6)
Breastfed ≥24 weeks 1173 (74.6)
Back pain at 12 months postpartum 1212 (77.0)
Back pain affected ability to conduct daily tasks on a scale of 0 to 10
No back pain or not affected (0–1) 750 (47.7)
Mildly affected (2–4) 532 (33.9)
Moderately affected (5–7) 199 (12.7)
Severely affected (8–10) 90 (5.7)
Urinary incontinence at 12 months postpartum 773 (49.2)
Urinary incontinence affected ability to conduct daily tasks on a scale of 0 to 10
No urinary incontinence or not affected (0–1) 1305 (83.0)
Mildly affected (2–4) 215 (13.7)
Moderately affected (5–7) 40 (2.5)
Severely affected (8–10) 12 (0.8)

1The education categories included: for the High school category: some high school, graduated high school, some post-secondary, and for the Post-secondary category: graduated post-secondary, some graduate school, or completed graduate school

2Pregnancy complications included at least one of the following: pregnancy induced hypertension, pre-eclampsia, eclampsia, placental abruption, gestational diabetes, or placenta praevia)