Journal
ACTA OBSTETRICIA ET GYNECOLOGICA SCANDINAVICA
Volume 96, Issue 8, Pages 932-938Publisher
WILEY
DOI: 10.1111/aogs.13174
Keywords
Depression; peritraumatic reactions; post-traumatic stress disorder; rape; sexual assault; Tonic Immobility Scale
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Funding
- Swedish Research Council [90418601]
- ALF from the Stockholm County Council
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IntroductionActive resistance is considered to be the normal' reaction during rape. However, studies have indicated that similar to animals, humans exposed to extreme threat may react with a state of involuntary, temporary motor inhibition known as tonic immobility. The aim of the present study was to assess the occurrence of tonic immobility during rape and subsequent post-traumatic stress disorder and severe depression. Material and methodsTonic immobility at the time of the assault was assessed using the Tonic Immobility Scale in 298 women who had visited the Emergency clinic for raped women within 1month of a sexual assault. Information about the assault and the victim characteristics were taken from the structured clinical data files. After 6months, 189 women were assessed regarding the development of post-traumatic stress disorder and depression. ResultsOf the 298 women, 70% reported significant tonic immobility and 48% reported extreme tonic immobility during the assault. Tonic immobility was associated with the development of post-traumatic stress disorder (OR 2.75; 95% CI 1.50-5.03, p=0.001) and severe depression (OR 3.42; 95% CI 1.51-7.72, p=0.003) at 6months. Further, previous trauma history (OR 2.36; 95% CI 1.48-3.77, p<0.001) and psychiatric treatment history (OR 2.00; 95% CI 1.26-3.19, p=0.003) were associated with the tonic immobility response. ConclusionsTonic immobility during rape is a common reaction associated with subsequent post-traumatic stress disorder and severe depression. Knowledge of this reaction in sexual assault victims is important in legal matters and for healthcare follow up.
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