OBJECTIVE: Post-traumatic stress disorder (PTSD) develops according to consensus criteria within the first 1-6 months after a horrifying traumatic event, but it is alleged that PTSD may develop later. The objective was to review the evidence addressing occurrence of PTSD with onset >6 months after a traumatic event (delayed-onset PTSD). METHODS: Through a systematic search in PubMed, EMBASE, and PsycINFO, we identified 39 studies with prospective ascertainment of PTSD. A meta-analysis was performed in order to obtain a weighted estimate of the average proportion of delayed-onset PTSD cases, and meta-regression was used to examine effects of several characteristics RESULTS: Delayed-onset PTSD was reported in all studies except one, and the average prevalence across all follow-up time was 5.6% [95% confidence interval (95% CI) 4.3-7.3%]. The proportion with delayed-onset PTSD relative to all cases of PTSD was on average 24.5% (95% CI 19.5-30.3%) with large variation across studies. In six studies with sub-threshold symptom data, delayed-onset PTSD seemed most likely an aggravation of early symptoms. The proportion with delayed-onset PTSD was almost twice as high among veterans and other professional groups compared to non-professional victims. CONCLUSION: Descriptive follow-up data suggest that PTSD may manifest itself >6 months after a traumatic event, delayed-onset PTSD most often, if not always, is preceded by sub-threshold PTSD symptoms, and a higher proportion of PTSD cases are delayed among professional groups. Contextual factors and biased recall may inflate reporting of PTSD and a cautious interpretation of prevalence rates seems prudent.
OBJECTIVE: Post-traumatic stress disorder (PTSD) develops according to consensus criteria within the first 1-6 months after a horrifying traumatic event, but it is alleged that PTSD may develop later. The objective was to review the evidence addressing occurrence of PTSD with onset >6 months after a traumatic event (delayed-onset PTSD). METHODS: Through a systematic search in PubMed, EMBASE, and PsycINFO, we identified 39 studies with prospective ascertainment of PTSD. A meta-analysis was performed in order to obtain a weighted estimate of the average proportion of delayed-onset PTSD cases, and meta-regression was used to examine effects of several characteristics RESULTS: Delayed-onset PTSD was reported in all studies except one, and the average prevalence across all follow-up time was 5.6% [95% confidence interval (95% CI) 4.3-7.3%]. The proportion with delayed-onset PTSD relative to all cases of PTSD was on average 24.5% (95% CI 19.5-30.3%) with large variation across studies. In six studies with sub-threshold symptom data, delayed-onset PTSD seemed most likely an aggravation of early symptoms. The proportion with delayed-onset PTSD was almost twice as high among veterans and other professional groups compared to non-professional victims. CONCLUSION: Descriptive follow-up data suggest that PTSD may manifest itself >6 months after a traumatic event, delayed-onset PTSD most often, if not always, is preceded by sub-threshold PTSD symptoms, and a higher proportion of PTSD cases are delayed among professional groups. Contextual factors and biased recall may inflate reporting of PTSD and a cautious interpretation of prevalence rates seems prudent.
Authors: Charles H Bombardier; Casey B Azuero; Jesse R Fann; Donald D Kautz; J Scott Richards; Sunil Sabharwal Journal: Top Spinal Cord Inj Rehabil Date: 2021
Authors: Thomas C Neylan; Ronald C Kessler; Kerry J Ressler; Gari Clifford; Francesca L Beaudoin; Xinming An; Jennifer S Stevens; Donglin Zeng; Sarah D Linnstaedt; Laura T Germine; Sophia Sheikh; Alan B Storrow; Brittany E Punches; Kamran Mohiuddin; Nina T Gentile; Meghan E McGrath; Sanne J H van Rooij; John P Haran; David A Peak; Robert M Domeier; Claire Pearson; Leon D Sanchez; Niels K Rathlev; William F Peacock; Steven E Bruce; Jutta Joormann; Deanna M Barch; Diego A Pizzagalli; John F Sheridan; Steven E Harte; James M Elliott; Irving Hwang; Maria V Petukhova; Nancy A Sampson; Karestan C Koenen; Samuel A McLean Journal: Sleep Date: 2021-03-12 Impact factor: 5.849
Authors: Lars R Nissen; Karen-Inge Karstoft; Mia S Vedtofte; Anni B S Nielsen; Merete Osler; Erik L Mortensen; Gunhild T Christensen; Søren B Andersen Journal: BJPsych Open Date: 2017-11-08