Faculty of Health and Life Sciences, Oxford Brookes University, Jack Straws Lane, Marston, Oxford OX3 0FL, UK.
Health Psychol. 2011 May;30(3):368-73. doi: 10.1037/a0022739.
To assess the long-term impact of implementation intention formation in reducing consultations for emergency contraception and pregnancy testing among teenage women.
Teenage women visiting a family planning clinic were randomly assigned to implementation intention versus control conditions.
Objective measures of consultation outcomes were obtained from clinic records at 2-year follow-up (N = 227).
Rates of consultation for emergency contraception and pregnancy testing in the implementation intentions condition were 19% and 33% lower, respectively, compared to the rates observed in the control condition. Pregnancy rates were 43% lower. Intervention participants who consulted for emergency contraception and pregnancy testing at baseline were more than twice as likely to change to consulting for contraceptive supplies over the follow-up period compared to equivalent control participants (19% vs. 9%).
The impact of implementation intention formation on reducing pregnancy risk among teenagers is durable over 2 years. Implementation intentions were successful in changing behavior among precisely those participants who were at greatest risk of becoming pregnant.
评估制定实施意向对减少少女紧急避孕咨询和妊娠检测的长期影响。
在计划生育诊所就诊的少女被随机分配到实施意向组和对照组。
在 2 年随访时从诊所记录中获得客观的咨询结果（N=227）。
在实施意向条件下，紧急避孕和妊娠检测的咨询率分别比对照组低 19%和 33%。妊娠率降低了 43%。与对照组相比，在基线时进行紧急避孕和妊娠检测咨询的干预参与者在随访期间更有可能转为咨询避孕用品（19%对 9%）。
在 2 年内，制定实施意向对减少青少年的怀孕风险具有持久影响。实施意向成功地改变了那些最有可能怀孕的参与者的行为。
