1 The majority of participants (144, 64 6%) had experienced betw

1. The majority of participants (144, 64.6%) had experienced between one

and five career critical incidents. Forty six (20.6%) had experienced more than 10. For most (168, 75.3%) the index incident was more than a year in the past. For comparison, the characteristics of the EMS service from which the participants were recruited were as follows: 76% male, mean age 37.5 years, mean years of service 11.4, level of training distributed as 52% level 1, 24% level 2, 21% level 3, 3% supervisors. Thus the sample of participants was similar to the EMS service as a whole except that female gender and more experienced Inhibitors,research,lifescience,medical and more highly trained EMT/paramedics were over-represented. Table 1 Characteristics of 223 participating EMT/paramedics Development of the inventory based on relationship of items

to peritraumatic distress 1. Selection and classification of inventory items The prevalence of endorsement and relationship to peritraumatic distress were calculated Inhibitors,research,lifescience,medical for 36 characteristics of critical incidents (Table ​(Table2).2). Fourteen items with an effect size<0.015 were excluded from further analysis. The remaining 22 characteristics were categorized Inhibitors,research,lifescience,medical as situational, related to the EMS organization (“systemic ”), or to the EMT/paramedics’ personal situation immediately preceding, or emotional response to, the incident (“personal ”). Categorization Inhibitors,research,lifescience,medical by two investigators was identical for 19 items (86%). Disagreement on the remaining 3 items (I was surprised by the call; factors beyond my control; end of shift) was resolved by consensus. Table 2 Prevalence and effect of characteristics that made the index incident troubling 2. Prevalence of endorsing situational, system and personal characteristics and their relationship to peritraumatic distress Situational characteristics were endorsed

by 197 (88.3%) participants, systemic characteristics by 101 (45.3%) and personal characteristics by 179 (80.3%). A Venn diagram (Figure Inhibitors,research,lifescience,medical ​(Figure1)1) reveals that situations with characteristics in multiple domains were common. The combined presence of characteristics from all three domains was Selleckchem Dinaciclib endorsed by 87 (39.0%) nearly participants, while another 87 (39.0%) participants reported the presence of characteristics from two domains. The occurrence of systemic characteristics in the absence of situational or personal characteristics was reported by only one participant. Figure 1 Distribution of 223 EMT/paramedics by endorsement of at least one item from each of three domains of critical incident characteristics: situational, systemic and personal characteristics. The relationship between peritraumatic distress and the three domains is presented in Table ​Table3.3. Both situational and personal characteristics had significant main effects on peritraumatic distress. Neither systemic characteristics nor any of the interaction terms made a significant contribution.

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