Table 2.
HPV vaccine doses received by case-control status.
| Characteristic | Total, N = 524 | Cases, N = 132 | Controls, N = 392 |
|---|---|---|---|
| ≥1 dose any time before focal time | |||
| No | 383/524 (73·1%) | 105/132 (79·5%) | 278/392 (70·9%) |
| Yes | 141/524 (26·9%) | 27/132 (20·5%) | 114/392 (29·1%) |
| Time between 1st HPV dose and focal time | |||
| Median (IQR), months | 57·0 (40·0–88·0) | 49·0 (27·0–83·0) | 57·5 (43·0–89·0) |
| ≥1 dose ≥2 years before focal time | |||
| No | 396/524 (75·6%) | 109/132 (82·6%) | 287/392 (73·2%) |
| Yes | 128/524 (24·4%) | 23/132 (17·4%) | 105/392 (26·8%) |
| Total number of doses before focal time | |||
| 1 dose | 13/128 (10·2%) | 0/23 (0·0%) | 13/105 (12·4%) |
| 2 doses | 13/128 (10·2%) | 3/23 (13·0%) | 10/105 (9·5%) |
| ≥3 doses | 102/128 (79·7%) | 20/23 (87·0%) | 82/105 (78·1%) |
| Age of first dose | |||
| ≤18 years | 34/128 (26·6%) | 4/23 (17·4%) | 30/105 (28·6%) |
| >18–22 years | 55/128 (43·0%) | 13/23 (56·5%) | 42/105 (40·0%) |
| >22 years | 39/128 (30·5%) | 6/23 (26·1%) | 33/105 (31·4%) |
| Median age (IQR), years | 21·0 (18·0–23·0) | 21·0 (19·0–23·0) | 21·0 (18·0–23·0) |
Data are presented as median interquartile range (IQR) for continuous measures, and n/total (%) for categorical measures.