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Health Psychol. 2011 May;30(3):368-73. doi: 10.1037/a0022739.

Durable effects of implementation intentions: reduced rates of confirmed pregnancy at 2 years.

Author information

1
Faculty of Health and Life Sciences, Oxford Brookes University, Jack Straws Lane, Marston, Oxford OX3 0FL, UK. jmartin@brookes.ac.uk

Abstract

OBJECTIVE:

To assess the long-term impact of implementation intention formation in reducing consultations for emergency contraception and pregnancy testing among teenage women.

DESIGN:

Teenage women visiting a family planning clinic were randomly assigned to implementation intention versus control conditions.

MAIN OUTCOME MEASURES:

Objective measures of consultation outcomes were obtained from clinic records at 2-year follow-up (N = 227).

RESULTS:

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%).

CONCLUSION:

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.

PMID:
21553981
DOI:
10.1037/a0022739
[Indexed for MEDLINE]

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