Table 5.
Regional differences in overreporting a and underreporting b. Results of multinomial logistic regression, Belgian Health Interview Survey 2008 (population aged 15 years and over)
| Adjusted for age and gender | Also adjusted for other characteristics c | |||||||
|---|---|---|---|---|---|---|---|---|
| Overreporting | Underreporting | Overreporting | Underreporting | |||||
| RRR d | (95 % CI) | RRR d | (95 % CI) | RRR d | (95 % CI) | RRR d | (95 % CI) | |
| Contact GP < 12 m | ||||||||
| Flanders | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Brussels | 2.43* | (1.83–3.23) | 1.38* | (1.07–1.79) | 1.93* | (1.37–2.73) | 1.52* | (1.12–2.07) |
| Wallonia | 1.49* | (1.10–2.01) | 1.30 | (0.99–1.70) | 1.55* | (1.14–2.11) | 1.29 | (0.97–1.70) |
| Contact specialist < 12 m | ||||||||
| Flanders | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Brussels | 1.56* | (1.18–2.07) | 1.00 | (0.83–1.21) | 1.32 | (0.95–1.82) | 1.10 | (0.89–1.36) |
| Wallonia | 1.13 | (0.84–1.53) | 1.16 | (0.97–1.39) | 1.14 | (0.84–1.54) | 1.16 | (0.96–1.39) |
| Contact dentist < 12 m | ||||||||
| Flanders | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Brussels | 1.54* | (1.25–1.90) | 1.60* | (1.16–2.21) | 1.46* | (1.16–1.85) | 1.46* | (1.01–2.12) |
| Wallonia | 1.42* | (1.16–1.76) | 1.79* | (1.31–2.45) | 1.45* | (1.18–1.79) | 1.72* | (1.25–2.36) |
| Contact dentist < 6 m | ||||||||
| Flanders | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Brussels | 1.45* | (1.11–1.88) | 1.03 | (0.77–1.39) | 1.24 | (0.93–1.68) | 1.07 | (0.79–1.46) |
| Wallonia | 1.10 | (0.84–1.44) | 1.04 | (0.78–1.39) | 1.08 | (0.83–1.42) | 1.05 | (0.79–1.40) |
| Contact physiotherapist < 12 m | ||||||||
| Flanders | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Brussels | 1.13 | (0.85–1.49) | 0.70* | (0.51–0.97) | 0.94 | (0.69–1.29) | 0.73 | (0.51–1.06) |
| Wallonia | 1.11 | (0.83–1.47) | 0.93 | (0.69–1.27) | 1.11 | (0.84–1.47) | 0.93 | (0.68–1.28) |
| Inpatient hospitalisation < 12 m | ||||||||
| Flanders | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Brussels | 0.97 | (0.63–1.49) | 1.43 | (0.84–2.42) | 0.73 | (0.41–1.30) | 1.50 | (0.81–2.80) |
| Wallonia | 0.96 | (0.67–1.39) | 1.39 | (0.87–2.23) | 0.86 | (0.60–1.25) | 1.44 | (0.90–2.29) |
| Day patient hospitalisation < 12 m | ||||||||
| Flanders | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Brussels | 1.09 | (0.67–1.77) | 1.25 | (0.97–1.60) | 0.74 | (0.42–1.30) | 1.43* | (1.09–1.86) |
| Wallonia | 1.22 | (0.78–1.91) | 1.08 | (0.84–1.38) | 1.17 | (0.75–1.81) | 1.14 | (0.90–1.46) |
< 12 m : in the 12 months prior to the date of the interview
< 6 m : in the 6 months prior to the date of the interview
* significant difference (p < 0.05)
a overreporting: self-reported contact, but no register-based contact
b underreporting: no self-reported contact, but register-based contact
c household type, education, income, type of insurance coverage, reimbursement schedule, country of birth, chronic disease, illness or handicap, proxy interview and health care
d Relative Risk Ratio