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Table 2 Cox regression model: Hazard of HPV vaccination initiation
From: Dynamics of HPV vaccination initiation in Flanders (Belgium) 2007-2009: a Cox regression model
| Hazard ratio | 95% CI | |
|---|---|---|
| Year of birth | ||
| 1989 | 19.39 | 17.47-21.52 |
| 1990 | 11.74 | 10.89-12.65 |
| 1991 | 4.32 | 4.11-4.55 |
| 1992 (base) | - | - |
| 1993 | 0.61 | 0.55-0.67 |
| 1994 | 0.37 | 0.33-0.41 |
| 1995 | 0.21 | 0.19-0.24 |
| 1996 | 0.23 | 0.20-0.25 |
| Province | ||
| Antwerp (base) | - | - |
| Limburg | 1.13 | 1.10-1.16 |
| West-Flanders | 0.85 | 0.83-0.87 |
| East-Flanders | 0.88 | 0.86-0.90 |
| Flemish-Brabant | 1.00 | 0.98-1.03 |
| Preferential treatment | ||
| No (base) | - | - |
| Yes | 0.55 | 0.52-0.58 |
| Median income neighborhood | ||
| Quintile 1 | 0.75 | 0.72-0.77 |
| Quintile 2 | 0.93 | 0.90-0.95 |
| Quintile 3 (base) | - | - |
| Quintile 4 | 1.04 | 1.02 -1.07 |
| Quintile 5 | 1.10 | 1.07-1.12 |
| Reimbursement regime | ||
| Compulsory (base) | - | - |
| Supplementary strict | 0.09 | 0.09-0.09 |
| Supplementary flexible | 0.01 | 0.01-0.01 |
| Letter NACM | ||
| No (base) | - | - |
| Yes | 2.28 | 2.08-2.50 |
| Preferential treatment (Yes) * NACM reimbursement (strict or flexible) | 0.55 | 0.47-0.64 |
