Introduction
Methods
Study design and setting
Study groups
Measurements
Statistical analyses
Results
Continuers (n = 199) | Discontinuers (n = 100) | |
---|---|---|
Age at childbirth [years] | 31.3 ± 5.4 | 31.1 ± 5.6 |
Pregnancy duration [days] | 272.3 ± 16.0 | 273.3 ± 15.1 |
Gender at follow-up | ||
Female | 195 (98.0%) | 100 (100.0%) |
Male | 4 (2.0%) | - |
First language | ||
English | 197 (99.0%) | 91 (91.0%) |
Others1 | 2 (1.0%) | 9 (9.0%) |
French | 1 (0.5%) | 1 (1.0%) |
Russian | - | 1 (1.0%) |
Spanish | 1 (0.5%) | 6 (6.0%) |
Vietnamese | - | 1 (1.0%) |
Ethnicity | ||
White | 165 (82.9%) | 76 (76.0%) |
Others1 | 34 (17.1%) | 24 (24.0%) |
Black | 2 (1.0%) | 2 (2.0%) |
Hispanic | 13 (6.5%) | 13 (13.0%) |
Asian | - | 1 (1.0%) |
Other ethnicities | 19 (9.5%) | 7 (7.0%) |
Education at follow-up | ||
University diploma | 65 (32.7%) | 36 (36.0%) |
No university diploma | 134 (67.3%) | 64 (64.0%) |
Household income at follow-up [US$ per year] | ||
High (> 75,000) | 140 (70.4%) | 68 (68.0%) |
Low to average1 | 59 (29.7%) | 42 (42.0%) |
Median (50,000 to 75,000) | 26 (13.1%) | 14 (14.0%) |
Low (< 50,000) | 33 (16.6%) | 18 (18.0%) |
Living with partner at follow-up | ||
Yes | 173 (86.9%) | 74 (74.0%) |
No | 26 (13.1%) | 26 (26.0%) |
Planned pregnancy | ||
Yes | 140 (70.4%) | 57 (57.0%) |
No | 58 (29.1%) | 43 (43.0%) |
Refused to say2 | 1 (0.5%) | - |
Smoking during pregnancy | ||
Yes | 27 (13.6%) | 23 (23.0%) |
No | 171 (85.9%) | 77 (77.0%) |
OR | 95% CI | P | aOR | 95% CI | p | |||
---|---|---|---|---|---|---|---|---|
Age | 1.01 | 0.96 | 1.05 | 0.718 | 1.01 | 0.96 | 1.06 | 0.819 |
Education | 1.16 | 0.70 | 1.92 | 0.565 | 0.97 | 0.53 | 1.74 | 0.926 |
Ethnicity | 1.53 | 0.84 | 2.75 | 0.155 | 1.05 | 0.52 | 2.04 | 0.886 |
First language (English) | 9.74 | 2.45 | 64.74 | 0.004 | 14.94 | 2.40 | 291.45 | 0.015 |
Living with a partner | 2.34 | 1.27 | 4.31 | 0.006 | 1.69 | 0.76 | 3.75 | 0.194 |
Household income | 1.12 | 0.66 | 1.87 | 0.677 | 0.73 | 0.35 | 1.47 | 0.381 |
Planned pregnancy | 0.56 | 0.34 | 0.92 | 0.022 | 0.61 | 0.35 | 1.06 | 0.079 |
Pregnancy duration | 0.99 | 0.98 | 1.01 | 0.424 | 1.00 | 0.98 | 1.01 | 0.738 |
Smoking during pregnancy | 0.53 | 0.28 | 0.99 | 0.043 | 0.59 | 0.30 | 1.19 | 0.136 |