We review factors that influence children's use of primary health care serv
ices. Predictors of pediatric health care use include child health status,
child mental health, parent and family functioning, demographic characteris
tics, and access to health care services. Health services research is marke
d by inconsistencies due to varying approaches to measurement, population s
ampling, and analysis, and models that do not incorporate situational facto
rs. We present recommendations for practicing clinicians and discuss sugges
tions for future research to help identify additional factors that may infl
uence a parent's decision to seek help from pediatric physicians. Health ca
re use is determined by multiple factors, and complex models will lead to i
mproved strategies for maximizing health status and establishing optimal pe
diatric care.