California's ballot proposition 187, passed by the voters in November
1994, threatened to discontinue undocumented immigrants' eligibility f
or most health services while mandating that health care professionals
report suspected undocumented patients to authorities. Although the p
roposition has not been put into practice, reports suggest that its pa
ssage was associated with a decline in the use of health services by s
ome groups. To assess the effects of the passage of Proposition 187 on
the use of primary care services, we surveyed a representative sample
of California clinics serving low-income groups (n = 129). Using a ma
iled questionnaire and phone interviews with clinic directors, we obta
ined qualitative and quantitative data regarding the effects of the pa
ssage of the proposition on clinic use. Among primary care clinics sta
tewide and clinics serving predominantly Latino patients, we detected
no significant decline in total monthly visits following the election.
Nevertheless, half of clinic directors (51%) thought that the number
of clinic visits declined after the passage of Proposition 187, and ma
ny directors thought that the deterrent effects of the election persis
ted for weeks to months after the election. Whereas the number of visi
ts probably declined at some clinics, only a small minority of patient
s at most primary care clinics could have been deterred from seeking c
are after the passage of Proposition 187.