Table 1.
Distribution of Matching Factors Among Herpes Zoster Case Patients and Controls
| Factor | Denmark, No. (%)a | United Kingdom, No. (%)a | ||
|---|---|---|---|---|
| Case Patients (n = 190671) | Controls (n = 762684) | Case Patients (n = 150207) |
Controls (n = 576878) |
|
| Sex | ||||
| Female | 125526 (65.8) | 502104 (65.8) | 90501 (60.3) | 354057 (61.4) |
| Male | 65145 (34.2) | 260580 (34.2) | 59706 (39.7) | 222821 (38.6) |
| Age at index date, median (IQR), y | 64 (53–75) | 64 (53–75) | 65 (55–75) | 65 (55–75) |
| Age group at index date | ||||
| 40–49 y | 34838 (18.3) | 139352 (18.3) | 20844 (13.9) | 77009 (13.3) |
| 50–59 y | 41898 (22.0) | 167592 (22.0) | 33632 (22.4) | 127508 (22.1) |
| 60–69 y | 45662 (23.9) | 182648 (23.9) | 38437 (25.6) | 150110 (26.0) |
| 70–79 y | 39264 (20.6) | 157056 (20.6) | 34767 (23.1) | 136694 (23.7) |
| 80–89 y | 23968 (12.6) | 95872 (12.6) | 19454 (13.0) | 75566 (13.1) |
| ≥90 y | 5041 (2.6) | 20164 (2.6) | 3073 (2.0) | 9991 (1.7) |
| Socioeconomic status (practice level) | ||||
| 1 (least deprived) | … | … | 29889 (19.9) | 114855 (19.9) |
| 2 | … | … | 29529 (19.7) | 113395 (19.7) |
| 3 | … | … | 32306 (21.5) | 124101 (21.5) |
| 4 | … | … | 30580 (20.4) | 117216 (20.3) |
| 5 (most deprived) | … | … | 27903 (18.6) | 107311 (18.6) |
Abbreviation: IQR, interquartile range.
aData represent No. (%) of case patients or controls, unless otherwise specified.