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Incidence of induced abortion determined by the randomised response technique.

OBJECTIVE: To estimate the incidence of induced abortion using the randomised response technique, and to compare the results with estimates obtained by direct questioning. DESIGN: Cross-sectional study. SETTING: Medical Officer of Health area, Homagama. SUBJECTS: Married women in the reproductive age group. RESULTS: The annual incidence of induced abortion for the three year period 1988 to 1990 was 15.7 per 1000 married women of the reproductive age group as estimated by the randomised response technique. Direct questioning led to 30.5% under-reporting of induced abortion. The application of the method failed only in 8.1% of the population studied. CONCLUSIONS: The randomised response technique is a feasible method to use in our population and provides the best estimates of induced abortion.

Abortion, Induced↗

A medical record linkage analysis of abortion underreporting.

Inaccuracy in women's reports of their abortion histories affects many areas of interest to reproductive health professionals and researchers. The identification of characteristics that affect the accuracy of reporting is essential for the improvement of data collection methods. A comparison of the medical records of 104 American women aged 27-30 in 1990-1991 with their self-reported abortion histories revealed that 19% of these women failed to report one or more abortions. Results of logistic regression analysis indicate that nonwhite women were 3.3 times as likely as whites to underreport. With each additional year that had elapsed since the first recorded abortion, women became somewhat more likely to underreport (odds ratio of 1.3), while each additional year of a woman's education slightly decreased the likelihood of underreporting (odds ratio of 0.7).

Abortion, Induced↗

Measuring the extent of abortion underreporting in the 1995 National Survey of Family Growth.

CONTEXT: Induced abortions are often severely underreported in national surveys, hampering the estimation and analysis of unintended pregnancies. To improve the level of abortion reporting, the 1995 National Survey of Family Growth (NSFG) incorporated new interview and self-report procedures, as well as a monetary incentive to respondents. METHODS: The weighted numbers of abortions reported in the main interview of the 1995 NSFG (Cycle 5), in the self-report and in the two procedures combined are compared with abortion estimates from The Alan Guttmacher Institute. The Cycle 5 estimates are also compared with estimates from previous cycles of the NSFG. RESULTS: The self-report produces better reporting than the main interview, but combining data from the two procedures yields the highest count of abortions. For the period 1991-1994, the level of reporting is 45% in the main interview, 52% in the self-report and 59% when the two methods are combined. The level of abortion reporting in the combined data ranges from 40% for women with an income less than the federal poverty level to more than 75% among women who were older than 35, those who were married at the time of their abortion and those with an income above 200% of the poverty level. The completeness of abortion reporting in the main interview of Cycle 5, though indicating a remarkable improvement over reporting in Cycle 4, is comparable to the levels in Cycles 2 and 3. CONCLUSIONS: The usefulness of the NSFG remains extremely limited for analyses involving unintended pregnancy and abortion.

Abortion, Induced↗