Associations between chlamydia screening, hospital diagnosed complications, and socioeconomic factors
| Variable | Pelvic inflammatory disease* | Ectopic pregnancy* | Infertility* | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Hazard ratio (95% CI) | Hazard ratio (95% CI) | Hazard ratio (95% CI) | |||||||
| Crude | Adjusted† | p value‡ | Crude | Adjusted† | p value‡ | Crude | Adjusted† | p value‡ | |
| *Models restricted to 43715 women under 25 years at study entry with complete data. All models controlled for age. | |||||||||
| †Adjusted models control for chlamydia test status, educational level, housing type, income, number of births, and census year. | |||||||||
| ‡p Value refers to adjusted model. | |||||||||
| Chlamydia test | |||||||||
| Never | 0.69 (0.61 to 0.78) | 0.72 (0.63 to 0.82) | <0.0001 | 0.98 (0.83 to 1.15) | 0.95 (0.80 to 1.13) | 0.160 | 0.60 (0.53 to 0.67) | 0.65 (0.57 to 0.73) | <0.0001 |
| All negative | 1 (reference) | 1 (reference) | 1 (reference) | 1 (reference) | 1 (reference) | 1 (reference) | |||
| Positive | 1.50 (1.23 to 1.82) | 1.27 (1.04 to 1.55) | 1.42 (1.06 to 1.88) | 1.26 (0.94 to 1.67) | 1.38 (1.15 to 1.66) | 1.31 (1.09 to 1.57) | |||
| Educational level | |||||||||
| Graduate | 1 (reference) | 1 (reference) | <0.0001 | 1 (reference) | 1 (reference) | <0.0001 | 1 (reference) | 1 (reference) | <0.0001 |
| High school | 1.52 (1.25 to 1.84) | 1.48 (1.22 to 1.80) | 1.22 (0.97 to 1.54) | 1.28 (1.01 to 1.62) | 1.26 (1.09 to 1.47) | 1.23 (1.06 to 1.43) | |||
| Vocational | 3.20 (2.66 to 3.84) | 2.86 (2.36 to 3.47) | 2.32 (1.86 to 2.89) | 2.16 (1.70 to 2.73) | 1.88 (1.63 to 2.18) | 1.85 (1.58 to 2.16) | |||
| Basic | 5.38 (4.39 to 6.59) | 4.51 (3.62 to 5.61) | 3.43 (2.64 to 4.45) | 3.04 (2.29 to 4.04) | 1.55 (1.25 to 1.92) | 1.51 (1.20 to 1.89) | |||
| Total numbers | 1095 events | 621 events | 1265 events | ||||||