RESUMEN
Objective To analyze the risk factors of unplanned pregnancy after artificial abortion. Methods 4 000 patients after artifi-cial abortion in our hospital from May 2010 to May 2013 were selected for this study. 1 723 patients who conducted unplanned pregnancy after artificial abortion were observation group,then 1 723 patients were selected randomly in patients without unplanned pregnancy after artificial abortion as control group. The number of the age under 19,rural registered permanent residence,income below 2 000 yuan,high school diplo-ma or less,domestic partnership,2 or more sex partners and first sexual behavior under 17 were observed. Results In the 4 000 patients, the rate of unplanned pregnancy after artificial abortion was 43. 08%. Chi-square test and logistics regression analysis revealed that age under 19,rural registered permanent residence,income below 2 000 yuan,high school diploma or less, domestic partnership,2 or more sex partners and first sexual behavior under 17 were the risk factors of unplanned pregnancy after artificial abortion. Conclusion Young age,low educa-tion level,low income and open-minded about sex are the key risk factors of unplanned pregnancy after artificial abortion.