Comparing self-reported health interview survey and pharmacy billing data in determining the prevalence of diabetes, hypertension, and hypercholesterolemia in Belgium

Table 3 Survey-weighted prevalence of chronic conditions among the Belgian population (2018) based on BHIS and BCHI definitions ^a

Variables	Diabetes		Hypertension		Hypercholesterolemia
Variables	n (%)	Diff ^b	n (%)	Diff ^b	n (%)	Diff ^b
BHIS
SRC	609 (5.9)	0.1	1697 (17.6)	-7.0	1704 (18.1)	1.9
SRCD	556 (5.4)	-0.4	1490 (15.4)	-9.2	1210 (12.7)	-3.5
CATC	542 (5.4)	-0.4	2167 (22.2)	-2.4	1319 (13.6)	-2.6
BCHI	591 (5.8)		2434 (24.6)		1572 (16.2)

^a The figures correspond to the number of individuals with chronic condition and their respective weighted prevalence
^b Percent difference between the BHIS and BCHI disease prevalence
Abbreviations: BCHI, Belgian compulsory health insurance; BHIS, Belgian Health Interview Survey; CATC, chronic condition ascertained from the ATC of consumed medications; SRC, self-reported chronic condition; SRCD, self-reported chronic condition and drug consumption

ISSN: 2049-3258