Logistic regression examining predictors of lack of sexual competence at first sex, results adjusted for all other variables in table column (Women)
| Outcome: not sexually competent at first intercourse | AOR | Model 1 | P value | AOR | Model 2 | P value |
| 95% CI | 95% CI | |||||
| IMD quintile | ||||||
| 1: Least deprived | 1 | 0.233 | 1 | 0.291 | ||
| 2 | 1.19 | 0.81 to 1.74 | 1.18 | 0.78 to 1.78 | ||
| 3 | 0.99 | 0.68 to 1.43 | 0.96 | 0.64 to 1.44 | ||
| 4 | 1.44 | 0.99 to 2.07 | 1.43 | 0.97 to 2.12 | ||
| 5: Most deprived | 1.26 | 0.87 to 1.82 | 1.22 | 0.83 to 1.81 | ||
| Education level of respondent | ||||||
| Studying for/attained further academic qualifications | 1 | 0.020 | 1 | 0.067 | ||
| Academic qualifications typically gained at 16 years | 1.34 | 1.02 to 1.76 | 1.22 | 0.91 to 1.63 | ||
| No academic qualifications | 1.81 | 1.07 to 3.08 | 1.87 | 1.06 to 3.32 | ||
| Ethnic group | ||||||
| White | 1 | 0.050 | 1 | 0.009 | ||
| Mixed | 1.75 | 0.87 to 3.52 | 1.47 | 0.74 to 2.93 | ||
| Asian | 1.54 | 0.67 to 3.52 | 2.85 | 1.10 to 7.41 | ||
| Black | 3.22 | 1.26 to 8.22 | 4.67 | 1.62 to 13.45 | ||
| Chinese and ’other' | 1.66 | 0.60 to 4.58 | 2.97 | 0.80 to 11.01 | ||
| Family structure | ||||||
| Both parents | 1 | 0.029 | 1 | 0.245 | ||
| One/neither parent | 1.34 | 1.03 to 1.73 | 1.18 | 0.89 to 1.56 | ||
| Main source of information about sexual matters | ||||||
| Lessons at school | 1 | 0.071 | 1 | 0.536 | ||
| Mother or father | 1.38 | 0.92 to 2.09 | 1.33 | 0.85 to 2.09 | ||
| Friends | 1.48 | 1.09 to 2.02 | 1.20 | 0.86 to 1.67 | ||
| Other | 1.25 | 0.90 to 1.72 | 1.15 | 0.80 to 1.64 | ||
| Ease discussing sex with parents at age 14 years | ||||||
| Easy with one/both | 1 | 0.096 | 1 | 0.137 | ||
| Difficult | 1.58 | 0.93 to 2.67 | 1.51 | 0.90 to 2.54 | ||
| Didn’t discuss with either | 1.39 | 1.02 to 1.90 | 1.39 | 0.98 to 1.95 | ||
| Varied depending on topic | 0.94 | 0.50 to 1.77 | 0.91 | 0.47 to 1.76 | ||
| Sex before age 16 years | ||||||
| No | 1 | <0.001 | 1 | <0.001 | ||
| Yes | 2.60 | 2.00 to 3.38 | 2.93 | 2.20 to 3.90 | ||
| Relationship with first sexual partner | ||||||
| Steady relationship | 1 | <0.001 | ||||
| Just/recently met for first time | 4.84 | 2.71 to 8.64 | ||||
| Known each other a while to not in steady relationship | 3.95 | 2.81 to 5.56 | ||||
| Used to be in steady relationship | 2.95 | 1.45 to 6.01 | ||||
| Married/living together | 0.14 | 0.02 to 1.21 | ||||
| Partner’s first time too | ||||||
| Yes to partner’s first time | 1 | <0.001 | ||||
| Think it was first time | 3.90 | 1.62 to 9.36 | ||||
| Think it was not first time | 2.29 | 1.21 to 4.34 | ||||
| No to not first time | 1.52 | 1.14 to 2.04 | ||||
| Age difference between respondent and first sex partner | ||||||
| Same age | 1 | 0.639 | ||||
| Partner younger than respondent | 1.40 | 0.70 to 2.81 | ||||
| Respondent younger than partner | 1.04 | 0.79 to 1.37 | ||||
| N unweighted | 1432 | 1432 | ||||
| N weighted | 805 | 805 | ||||
AOR, adjusted odds ratio; CI, confidence interval; IMD, Index of Multiple Deprivation.