Total | Ref | 0.8 (0.5 to 1.4)p = 0.396 | 0.7 (0.4 to 1.3)p = 0.285 | |
Reason for attendance (baseline) | | | | |
Attended for symptoms | 0.7 (0.1 to 5.3)p = 0.716 | 0.7 (0.2 to 2.5)p = 0.615 | 1.8 (0.7 to 4.7)p = 0.211 | |
Other reason, but reported symptoms | 2.0 (0.9 to 4.8)p = 0.108 | 0.8 (0.4 to 1.8)p = 0.598 | 1.2 (0.5 to 3.0)p = 0.683 | |
Asymptomatic | ref. | ref. | ref. | |
| | | | |
Age group (years)† | | | | |
16–17 | 2.8 (0.9 to 8.1)p = 0.064 | 1.8 (0.6 to 5.0)p = 0.281 | 2.5 (0.8 to 8.1)p = 0.135 | 1.9 (0.9 to 4.1)p = 0.116 |
18–20 | 0.8 (0.3 to 2.2)p = 0.728 | 1.2 (0.4 to 3.5)p = 0.679 | 1.7 (0.6 to 4.7)p = 0.298 | 1.1 (0.5 to 2.3)p = 0.772 |
21–24 | Ref | Ref | Ref | Ref |
| | | | |
Ethnic group† | | | | |
White | Ref | Ref | Ref | Ref |
Non-white | No events | No events | No events | No events |
Unknown | 0.7 (0.2 to 1.8)p = 0.405 | 0.6 (0.1 to 4.6)p = 0.644 | 0.4 (0.1 to 1.4)p = 0.175 | Not in model |
| | | | |
Ever had chlamydia (baseline) | | | | |
Yes | 0.6 (0.1 to 4.7)p = 0.648 | No events | 1.8 (0.7 to 4.9)p = 0.236 | |
No | Ref | Ref | Ref | |
| | | | |
Condom use at last sexual intercourse† | | | | |
Yes | 0.8 (0.2 to 3.3)p = 0.710 | 1.3 (0.5 to 3.2)p = 0.552 | 0.9 (0.3 to 3.1)p = 0.856 | 0.7 (0.3 to 1.6)p = 0.487‡ |
No | Ref | Ref | Ref | ref. |
| | | | |
Symptoms (yes, past 3 or 6 months)§ | No is ref | No is ref | No is ref | |
Cystitis (urinary tract infection) | 2.5 (0.9 to 6.6)p = 0.065 | 1.1 (0.4 to 3.3)p = 0.842 | 0.7 (0.2 to 2.9)p = 0.598 | |
Frequent urination | 1.5 (0.4 to 5.1)p = 0.544 | 2.1 (0.7 to 6.4)p = 0.175 | 1.1 (0.4 to 3.2)p = 0.896 | |
Abdominal pain | 1.6 (0.5 to 4.9)p = 0.394 | 1.0 (0.3 to 3.0)p = 0.987 | 4.1 (1.7 to 10.0)p = 0.002 | |
Bleeding between periods | 1.3 (0.4 to 4.6)p = 0.641 | 2.4 (0.8 to 7.1)p = 0.112 | 2.0 (0.7 to 6.1)p = 0.214 | |
Bleeding after sexual intercourse | 2.3 (0.5 to 10.0)p = 0.275 | 1.7 (0.2 to 12.4)p = 0.621 | 4.1 (1.3 to 12.5)p = 0.013 | |
Pain during sexual intercourse | 0.6 (0.1 to 4.9)p = 0.675 | 0.8 (0.2 to 3.3)p = 0.738 | 3.0 (1.1 to 7.7)p = 0.025 | |
Discharge | 1.4 (0.5 to 4.2)p = 0.551 | 1.5 (0.5 to 4.0)p = 0.445 | 2.1 (0.9 to 5.2)p = 0.097 | |
None | 0.8 (0.2 to 2.3)p = 0.703 | 0.6 (0.2 to 1.5)p = 0.293 | 0.4 (0.1 to 1.1)p = 0.079 | |
| | | | |
Recent rate of partner change per 6 months†, ¶ | 4.1 (0.7 to 24.4)p = 0.123** | 3.5 (1.4 to 8.9)p = 0.007** | 1.7 (0.5 to 5.7)p = 0.427** | †† |
No male sexual partner change | Ref | Ref | Ref | Ref |
1 new male sexual partners | No events | 5.1 (1.4 to 18.5)p = 0.012 | 0.6 (0.1 to 4.5)p = 0.600 | 1.2 (0.5 to 3.1)p = 0.702‡ |
2 new male sexual partners | 3.8 (1.4 to 10.2)p = 0.013 | 4.2 (1.2 to 14.7)p = 0.024 | 2.9 (1.2 to 7.3)p = 0.020 | 2.9 (1.5 to 5.6)p = 0.002 |
3 new male sexual partners | 5.6 (0.6 to 49.5)p = 0.120 | 13.9 (3.0 to 65.1)p = 0.001 | 2.2 (0.3 to 17.1)p = 0.468 | 4.1 (1.4 to 11.8)p = 0.010 |
⩾4 new male sexual partners | 1.1 (0.1 to 9.2)p = 0.918 | 5.2 (1.1 to 23.2)p = 0.032 | 0.9 (0.1 to 7.1)p = 0.922 | 1.4 (0.5 to 3.8)p = 0.532‡ |
| | | | |
Patient management for initial positive test |
Patient treatment of initial positive test | | | | |
Azithromycin | Ref | Ref | Ref | |
Other regimen | 0.3 (0.03 to 1.9)p = 0.177 | 0.9 (0.3 to 2.7)p = 0.910 | 1.1 (0.5 to 2.4)p = 0.886 | |
| | | | |
Partner management details for initial positive test |
Partner treatment rate‡‡ | | | | |
100% of known partners treated | Ref | Ref | Ref | |
<100% of known partners treated | 1.8 (0.8 to 4.1)p = 0.176 | 2.6 (1.1 to 6.0)p = 0.030 | 1.5 (0.7 to 3.3)p = 0.302 | |
| | | | |
Effective partner treatment rate†,§§ | | | | ¶¶ |
100% of reported partners treated | Ref | Ref | Ref | Ref |
<100% of reported partners treated | 2.4 (1.0 to 5.6)p = 0.047 | 2.3 (1.1 to 4.9)p = 0.037 | 1.8 (0.8 to 3.9)p = 0.131 | 1.8 (1.0 to 3.3)p = 0.034‡ |
| | | | |
Effective partner treatment rate§§ and condom use at last sex† |
Used condom at last sexual intercourse |
All reported partners treated | Ref | Ref | Ref | 4.7 (0.9 to 23.3) p = 0.058 |
Not all reported partners treated | No events | 0.4 (0.1 to 2.1)p = 0.286 | No events | Ref*** |
| | | | |
Did not use a condom at last sexual intercourse |
All reported partners treated | 0.6 (0.1 to 3.0)p = 0.573 | 0.3 (0.1 to 0.9)p = 0.041 | 0.3 (0.1 to 1.1)p = 0.071 | 2.0 (0.4 to 9.5)p = 0.377 |
Not all reported partners treated | 1.5 (0.3 to 7.3)p = 0.607 | 1.0 (0.3 to 2.9)p = 0.988 | 1.0 (0.3 to 3.6)p = 0.997 | 5.8 (1.3 to 25.9)p = 0.021 |