Table 2.
Number (percentage) of records in data extract stratified by year of birth, number of doses of bivalent human papillomavirus vaccine, cytological abnormality, referral for colposcopy, and histological diagnosis
| Variables | Year of birth | Total | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | ||
| No of records | 17 589 | 16 801 | 17 471 | 17 618 | 16 669 | 16 050 | 15 854 | 15 229 | 5414 | 138 692 |
| Vaccine doses: | ||||||||||
| 0 | 17 579 (99.9) | 16 731 (99.6) | 14 038 (80.4) | 4994 (28.3) | 3002 (20.3) | 3283 (20.3) | 2209 (13.9) | 1665 (10.9) | 545 (10.1) | 64 026 (46.2) |
| 1 | 3 (0.02) | 22 (0.1) | 233 (1.4) | 538 (3.1) | 415 (2.5) | 437 (2.7) | 267 (1.7) | 101 (0.7) | 29 (0.5) | 2051 (1.5) |
| 2 | 2 (0.01) | 18 (0.1) | 488 (2.8) | 1196 (6.8) | 815 (5.1) | 833 (5.2) | 548 (3.5) | 161 (1.1) | 38 (0.7) | 4135 (3.0) |
| 3 | 5 (0.03) | 30 (0.2) | 2706 (15.5) | 10 890 (61.8) | 12 401 (74.4) | 11 517 (71.8) | 12 830 (80.9) | 13 229 (87.3) | 4802 (88.7) | 68 480 (49.4) |
| Cytology result: | ||||||||||
| Negative | 14 500 (82.4) | 13 923 (82.9) | 14 302 (81.9) | 14 780 (83.9) | 14 031 (84.2) | 13 640 (85.0) | 13 452 (84.8) | 13 080 (85.9) | 4656 (86.0) | 116 364 (83.9) |
| Borderline/ASCUS | 1819 (10.3) | 1828 (10.9) | 2102 (12.0) | 1939 (11.0) | 1624 (9.8) | 1143 (7.1) | 1112 (7.0) | 1034 (6.8) | 365 (6.7) | 12 966 (9.3) |
| Low grade dyskaryosis/LSIL | 929 (5.3) | 779 (4.6) | 786 (4.5) | 694 (3.9) | 869 (5.2) | 1111 (6.9) | 1178 (7.4) | 1061 (7.0) | 375 (6.9) | 7782 (5.6) |
| HSIL-M | 208 (1.2) | 176 (1.0) | 191 (1.1) | 137 (0.8) | 93 (0.6) | 102 (0.6) | 76 (0.5) | 43 (0.3) | 13 (0.2) | 1040 (0.7) |
| HSIL-S+ | 132 (0.8) | 95 (0.6) | 90 (0.5) | 68 (0.4) | 52 (0.3) | 54 (0.4) | 36 (0.2) | 8 (0.1) | 5 (0.1) | 540 (0.4) |
| Referral for colposcopy | 680 (3.9) | 612 (3.6) | 557 (3.2) | 434 (2.5) | 355 (2.1) | 295 (1.9) | 278 (1.7) | 120 (0.8) | 20 (0.4) | 3351 (2.4) |
| Histological diagnosis: | ||||||||||
| CIN grade 1 | 122 (0.7) | 102 (0.6) | 98 (0.6) | 76 (0.4) | 63 (0.4) | 60 (0.4) | 45 (0.3) | 26 (0.2) | 4 (0.1) | 596 (0.4) |
| CIN grade 2 | 151 (0.9) | 118 (0.7) | 106 (0.6) | 75 (0.4) | 64 (0.4) | 63 (0.4) | 38 (0.2) | 20 (0.1) | 2 (0.04) | 637 (0.5) |
| CIN grade 3 or worse | 103 (0.6) | 81 (0.5) | 86 (0.5) | 66 (0.4) | 53 (0.3) | 38 (0.2) | 29 (0.2) | 9 (0.1) | 4 (0.1) | 469 (0.3) |
ASCUS=atypical squamous cells of undetermined significance; LSIL=low grade squamous intraepithelial lesion; HSIL=high grade squamous intraepithelial lesion (HSIL-M=mild dyskaryosis; HSIL-S+=severe dyskaryosis); CIN=cervical intraepithelial neoplasia.