Table 1

Univariate analysis of factors associated with women at risk for unintended pregnancy
Explanatory variable At risk for unintended pregnancy Not at risk for unintended pregnancy Odds ratio
n % n % Estimate Confidence interval p value
DEMOGRAPHICS DOMAIN
Age
<25 years old (vs. >25 years old) 297 80 380 63 2.4 1.8, 3.3 <0.0001
Birthplace
Born in Australia (vs. Born overseas) 286 77 435 72 1.3 1.0, 1.8 0.056
Time in Australia
 <5 years (vs. >5 years) 39 11 78 13 0.8 0.5, 1.2 0.286
Language at home
 English (vs. non-English) 331 90 551 91 0.8 0.5, 1.3 0.407
SOCIAL NORMS DOMAIN
Discussion of contraception with doctor
 Comfortable (vs. not comfortable) 336 93 561 94 0.9 0.5, 1.5 0.614
Discussion of contraception with parents
 Comfortable (vs. not comfortable) 105 38 165 45 0.7 0.5, 1.0 0.066
Discussion of contraception with partner
Comfortable (vs. not comfortable) 292 89 528 95 0.4 0.2, 0.7 <0.0001
Discussion of contraception with friends
 Comfortable (vs. not comfortable) 311 92 500 91 1.2 0.7, 1.9 0.557
Contraceptive support from parents
 Supportive (vs. not supportive) 193 69 273 72 0.9 0.6, 1.2 0.379
Contraceptive support from partner
Supportive (vs. not supportive) 295 85 556 94 0.3 0.2, 0.5 <0.0001
Contraceptive support from friends
Supportive (vs. not supportive) 335 95 531 91 1.8 1.1, 3.1 0.029
SOCIAL CIRCUMSTANCES DOMAIN
SEIFA (decile group) χ22 = 1.8, p =0.404
 1-5 33 9 69 11 reference -
 6-8 82 22 140 23 1.2 0.8, 2.0 0.424
 9-10 253 69 394 65 1.3 0.9, 2.1 0.193
Health Care Card
Yes (vs. no) 150 41 192 32 1.5 1.1, 2.0 0.004
Private Health Insurance
 Yes (vs. no) 170 46 293 49 0.9 0.7, 1.2 0.508
Annual Household income
>$60,000 (vs. <$60,000) 99 34 215 43 0.7 0.5, 0.9 0.017
INFORMATION DOMAIN
Highest Education completed
University/PostGraduate (vs. no University/Post graduate) 91 25 244 40 0.49 0.4, 0.7 <0.0001
Confident in knowledge of pregnancy prevention
Yes (vs. No) 314 85 575 95 0.32 0.2, 0.5 <0.0001
PAST EXPERIENCES DOMAIN
Ever pregnant
Yes (vs. No) 73 20 173 29 0.6 0.5, 0.9 0.003
Ever unintended pregnancy
 Yes (vs. No) 59 16 117 19 0.8 0.6, 1.1 0.212
Ever full term
Yes (vs. No) 17 5 46 8 0.6 0.3, 1.1 0.072
Ever miscarriage
 Yes (vs. No) 14 4 21 4 1.1 0.6, 2.2 0.778
Ever abortion
 Yes (vs. No) 38 10 80 13 0.8 0.5, 1.2 0.195
BELIEFS DOMAIN
Feel vulnerable to pregnancy
Yes (vs. No) 193 50 187 32 2.5 1.9, 3.2 <0.0001
Satisfied with contraception
Yes (vs. No) 154 42 440 73 0.3 0.2, 0.4 <0.0001
CUE TO ACTION DOMAIN
Health professional has spoken about contraception in last 12 months
 Yes (vs. No) 258 74 450 76 0.9 0.6, 1.2 0.319
Used >1 contraception in last 3 months
Yes (vs. No) 99 27 231 38 0.6 0.5, 0.8 <0.0001
>1 partner in the last 3 months
Yes (vs. No) 153 43 114 19 3.1 2.3, 4.2 <0.0001
Frequency of sex in the last 3 months
2-4 times/week or daily (vs. 2-4 times/month or less) 153 43 114 19 3.1 2.3, 4.2 <0.0001
CONTRACEPTIVE SELF EFFICACY DOMAIN
Plan ahead to have some form of contraception
Yes (vs. no) 318 87 571 96 0.3 0.2, 0.5 <0.0001
Stop to use contraception once aroused
Yes (vs. no) 219 60 476 80 0.4 0.3, 0.5 <0.0001
Resist sex if partner did not want to use contraception
Yes (vs. no) 179 49 428 72 0.4 0.3, 0.5 <0.0001

Texts are bolded if p value <0.1.

Ong et al.

Ong et al. BMC Public Health 2012 12:1108   doi:10.1186/1471-2458-12-1108

Open Data