Objective: To estimate the percentage of women with one or more of fou
r potentially modifiable risks who could have availed themselves of pr
e-conception counseling. Methods: We defined pre-conception counseling
to be consultation that occurs shortly before a couple attempts conce
ption. Thus, we assumed that to obtain pre-conception counseling, a wo
man must plan her pregnancy. We used data from a population-based surv
ey of 12,452 new mothers in four states who delivered babies during 19
88-1990. Mothers were contacted 3-6 months after delivery and asked ab
out pre-conception behaviors and the planning status of their pregnanc
ies. We estimated the percentage of women who planned their pregnancie
s and had an indication for pre-conception counseling related to smoki
ng, drinking, being underweight, or delaying initiation of prenatal ca
re. Results: State-specific response rates ranged from 68-84%. Sixty p
ercent of mothers reported that their pregnancies were planned. In gen
eral, mothers with unintended pregnancies were more likely to have an
indication for preconception counseling than mothers with planned preg
nancies. Thirty-eight percent of all mothers planned their pregnancies
and had one or more indications for preconception counseling. An addi
tional 30% had one or more indications for counseling but did not have
a planned pregnancy. Conclusions: Despite the limited range of indica
tions for counseling that we considered, a substantial percentage of w
omen potentially could have used counseling. A similar percentage of w
omen could have benefited from family planning services.