Variables | Subcategories (If applicable) | Knowledge tool group (n = 131) N (%)*, unless otherwise indicated | Control group (n = 310) [9]† N (%)*, unless otherwise indicated | p-value |
---|---|---|---|---|
Maternal age | Mean (±SD), years | 30.1 (5.5) | 29.5 (5.7) | 0.365 |
Gestational age at enrolment | Mean (±SD), years | 17.2 (5.5) | 30.9 (7.5) | <0.001‡ |
Ethnicity | Caucasian | 96 (75.6) | 229 (74.1) | 0.747 |
Marital status | Married | 95 (74.8) | 203 (65.5) | 0.156 |
Common-law | 17 (13.4) | 53 (17.1) | ||
Other | 15 (11.8) | 54 (17.4) | ||
Education | Secondary or less | 19 (14.7) | 72 (23.5) | 0.039‡ |
Any post-secondary | 110 (85.3) | 234 (76.5) | ||
Income | Low (< $20,000) | 19 (15.7) | 52 (19.8) | 0.115 |
Middle ($20,000 to $80,000) | 40 (33.1) | 106 (40.3) | ||
High (> $80 000) | 62 (51.2) | 105 (39.9) | ||
Current smoker | 14 (10.8) | 32 (10.4) | 0.897 | |
Chronic health conditions § | 39 (29.8) | 56 (19.1) | 0.015‡ | |
Pregnancy history | First time giving birth | 62 (47.7) | 132 (44.7) | 0.437 |
One previous birth | 50 (38.5) | 107 (36.3) | ||
Two or more previous births | 18 (13.9) | 56 (19.0) | ||
Prepregnancy BMI | Mean (±SD), kg/m2 | 24.7 (5.7) | 25.1 (6.7) | 0.492 |
Underweight (BMI <18.5 kg/m2) | 11 (8.5) | 20 (6.8) | 0.789 | |
Normal weight (BMI 18.5-24.9 kg/m2) | 67 (51.4) | 164 (56.2) | ||
Overweight (BMI 25.0-29.9 kg/m2) | 33 (25.4) | 65 (22.3) | ||
Obese (BMI >30 kg/m2) | 19 (14.6) | 43 (14.7) |