Number of hospital admissions and ED presentations for PID and EP, and age breakdown of the population and live birth denominators, by year, 2009–2014
| 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | Overall | |
| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | N (%) | |
| PID* | |||||||
| Total admissions | 2141 | 2314 | 2510 | 2429 | 2502 | 2375 | 14 271 (100) |
| CT-related or NG-related PID† | 81 (3.8) | 126 (5.4) | 123 (4.9) | 141 (5.8) | 157 (6.3) | 142 (6.0) | 770 (5.4) |
| Acute PID‡ | 124 (5.8) | 140 (6.1) | 176 (7.0) | 151 (6.2) | 152 (6.1) | 152 (6.4) | 895 (6.3) |
| Unspecified PID§ | 1379 (64.4) | 1513 (65.4) | 1674 (66.7) | 1614 (66.4) | 1613 (64.5) | 1592 (67.0) | 9385 (65.8) |
| Chronic PID¶ | 557 (26.0) | 535 (23.1) | 537 (21.4) | 523 (21.5) | 580 (23.2) | 489 (20.6) | 3221 (22.6) |
| Total ED presentations | 2566 | 2971 | 3438 | 3838 | 4067 | 3642 | 20 522 (100) |
| Admitted from ED | 746 (29.1) | 837 (28.2) | 1054 (30.7) | 1172 (30.5) | 1375 (33.8) | 1298 (35.6) | 6482 (31.6) |
| Not admitted from ED | 1820 (70.9) | 2134 (71.8) | 2384 (69.3) | 2666 (69.5) | 2692 (66.2) | 2344 (64.4) | 14 040 (68.4) |
| Ectopic pregnancy** | |||||||
| Total admissions | 3870 | 3768 | 3981 | 3841 | 4072 | 4047 | 23 579 (100) |
| Total ED presentations | 2974 | 2840 | 2996 | 3394 | 3549 | 3629 | 19 382 (100) |
| Admitted from ED | 2325 (78.2) | 2233 (78.6) | 2365 (78.9) | 2657 (78.3) | 2800 (78.9) | 2785 (76.7) | 15 165 (78.2) |
| Not admitted from ED | 649 (21.8) | 607 (21.4) | 631 (21.1) | 737 (21.7) | 749 (21.1) | 844 (23.3) | 4217 (21.8) |
| Denominator/s | |||||||
| Estimated residential population†† (N) | 3 534 785 | 3 578 562 | 3 611 095 | 3 659 865 | 3 708 538 | 3 754 048 | |
| 15–24 years (%) | 32.2 | 32.1 | 33.8 | 31.6 | 31.4 | 31.2 | |
| 25–34 years (%) | 33.4 | 33.7 | 34.0 | 34.2 | 34.8 | 35.2 | |
| 35–44 years (%) | 34.4 | 34.2 | 34.2 | 34.0 | 33.8 | 33.5 | |
| Live births‡‡ (N) | 234 821 | 235 805 | 233 193 | 239 145 | 237 205 | 232 553 | |
| 15–24 years (%) | 18.0 | 17.6 | 17.0 | 16.9 | 16.3 | 15.2 | |
| 25–34 years (%) | 58.9 | 59.0 | 59.9 | 60.4 | 60.9 | 60.6 | |
| 35–44 years (%) | 23.1 | 23.4 | 23.1 | 22.7 | 22.8 | 22.1 | |
↵*PID, International Classification of Diseases (ICD-10) codes N70.0, N70.1, N70.9, N71.0, N71.1, N71.9, N73.0, N73.1, N73.2, N73.3, N73.4, N73.5, N73.8, N73.9, (N74.4+A56.1), (N74.3+A54.2).
↵†CT-related or NG-related PID, ICD-10 codes (chlamydial PID N74.4+A56.1 and gonococcal PID N74.3+A54.2).
↵‡Acute PID, ICD-10 codes N70.0, N71.0, N73.0.
↵§Unspecified PID, ICD-10 codes N70.9, N71.9, N73.2, N73.5, N73.8, N73.9.
↵¶Chronic PID, ICD-10 codes N70.1, N71.1, N73.1, N73.4.
↵**Ectopic pregnancy, ICD-10 codes O00.0, O00.1, O00.2, O00.8, O00.9.
↵††Estimated residential population for women aged 15–44 years in 1678 study postcodes.
‡‡Live births, maternal age 15–44 years.
CT, Chlamydia trachomatis; ED, emergency department; EP, ectopic pregnancy; NG, Neisseria gonorrhoeae; PID, pelvic inflammatory disease.