Project Name
Intervention Now to Eliminate Repeat Unintended Pregnancies in Teenagers (INTERUPT)



Principal Investigator
Mrs Rhiannon Whitaker, Associate Director (NWORTH)

Whitaker Rh, Hendry M, Booth A, Carter B, Crane N, Edwards RhT, Noyes J, Rycroft-Malone J, Williams N.

Type of study
Secondary – Syst Review

Wales has one of the highest rate of teenage pregnancies in Western Europe. Unintended conceptions can do significant emotional, psychological and educational harm to young girls, often with lifelong implications for their life chances. Babies of teenage mothers have increased mortality in their first year and a significantly increased risk of living in poverty, achieving less at school and being unemployed later in life with considerable costs to society. Repeat teenage pregnancies represent a considerable proportion of the overall rate; one fifth of births amongst under 18’s are repeat pregnancies and are thus a crucial potential focus for intervention.

Teen pregnancies are of concern to all the UK governments and are the subject of strategy documents which are underpinned by evidence of varying quality. Our proposed review will examine world wide peer reviewed evidence and UK generated grey literature to find and evaluate interventions which seek to reduce the rate of repeat unintended teen pregnancies. We aim to understand and explain the evidence base so that policy makers can identify:
  • Who are at greater risk of repeat unintended pregnancies (predictors).
  • Which interventions are effective, how do they work, in what setting, and for whom?
  • What helps and hinders these interventions working?
  • How cost-effective are the interventions?
The interventions identified will be varied, in both setting and complexity. The research we will find may range from rigorous randomised trials to small informal service evaluations. The review we propose is designed, by the use of mixed methods, to deal with these overlapping degrees of complexity in a rigorous and structured way. We propose to go beyond the usual narrative synthesis and meta analysis by examining each type of evidence with a tailored approach, to sum up and explain the who, how, why and at what cost policy makers may be able to reduce the rate of repeat unintended teen pregnancies.

Study sponsor

School role
WSPCR supported (leading work packages)

Link with RDG / CSG

Start date
January 2013

End date
December 2015

Further information