Time trends in the use of field-substitution in the Belgian health interview survey

Table 1 Description of non-response, substitution, participation rates and substitution rates in the Belgian Health Interview Survey

Households selected for particiation	Initial selected	Substitute	Total	Substitution rates
Participating households	PINI_Survey	PSUB_Survey	PTOT_Survey	PSUB_Survey/PTOT_Survey
Non-participating households	NPRINI_Survey	NPRSUB_Survey	NPRTOT_Survey	NPRSUBSurvey/NPRTOT_Survey
Total	INI_Survey	SUB_Survey	TOT_Survey	SUBSurvey/TOT_Survey
Participation rates	NPRINI_Survey/INI_Survey	NPRSUB_Survey/SUB_Survey	NPRTOT_Survey/TOT_Survey

PINI_Survey: participating households among the initial selected households
NPRINI_Survey: non-participating households among the initial selected households
INI_Survey: total initial selected households
NPRINI_Survey/INI_Survey: proportion non-participating initial selected housholds
PSUB_Survey: participating households aming substitute households
NPRSUB_Survey: non-participating households among substitute households
SUB_Survey: total substitute households
NPRSUB_Survey/SUB_Survey: proportion non-participating substitute households
PTOT_Survey: total participating households
NPRTOT_Survey: total non-participating households
TOT_Survey: total households invited for participation
NPRTOT_Survey/TOT_Survey: proportion non-participating households
PSUB_Survey/PTOT_Survey: proportion participating substitute household among all households invited for participation
NPRSUB_Survey/NPRTOT_Survey: proportion non-participating substitute households among all non-participating households
SUB_Survey/TOT_Survey: proportion substitute households among all households invited for participation

ISSN: 2049-3258