Effect of distance to health facilities and access to contraceptive services among urban Turkish women.

The effect of distance to a health facility on contraceptive use significantly differed according to contraceptive availability at the facility. Further distance to a health facility that provided long-acting contraception decreased the use of long-acting contraception but had a substitute effect on the use of short-acting contraception. We conclude that when women face an accessibility barrier to the provision of long-acting contraception, they modify their behaviour by shifting from long- to short-acting contraception, which is less effective.