Background: Since 1991, the working patterns in Finnish primary care health
centres have been changing from traditional group practices towards local
population responsibility (LPR) with personal patient lists, As a result, i
t was expected the services would change notably, Methods: A controlled int
ervention study included 30 health centres changing their working pattern t
o LPR and 30 control health centres, We studied the use of health services
in both primary and secondary care in the areas served by these health cent
res during the transition phase from 1989 to 1993. Data were collected from
national statistics. Results: The application of LPR was associated with a
n initial increase in physician consultations, Consultations for preventive
care decreased in both LPR and control health centres, The use of speciali
zed care and consultations with private physicians particularly decreased i
n large LPR municipalities, Conclusions: The most significant changes occur
red in the working patterns of large health centres that had introduced LPR
, A wide range of variations between the health centres was observed for al
l activities in both groups.