Table 2 Cox regression model: Hazard of HPV vaccination initiation

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