Effectiveness of a Nursing Intervention for Nurses Have Experienced Trauma: a Study Based on Swanson's Caring Theory

depression

时间窗: one month after the intervention

Depression was assessed using the Center for Epidemiologic Studies Depression Scale (CES-D), developed by Radloff (1997) and translated into Korean by Chon and Rhee (1992). The Korean version of the CES-D contained 20 items rated on a 4-point Likert scale (0 = rarely or never; 3 = all the time), according to how respondents felt during the past week. Possible scores ranged from 0 to 60, with a score of 16 or above indicating depressive symptoms, and higher scores indicating higher levels of depression (1977). Cronbach's alpha coefficient for the Korean CES-D was .89 among Korean adults (1992).

anxiety

时间窗: one month after the intervention

Anxiety was measured using the Korean version of the State-Trait Anxiety Inventory (STAI; J. T. Kim \& Shin, 1978), originally developed by Spielberger et al. (1970). The STAI comprises 20 items measuring state anxiety, indicating the current degree of anxiety. It has 20 items assessing trait anxiety, indicating the degree of generally feeling anxious. The responses are rated on a four-point Likert scale ranging from 1 (almost never) to 4 (almost always), with the possible range of scores for each type of anxiety being 20-80. Higher scores indicate greater state and trait anxiety. Cronbach's alpha coefficients were 0.87 for state anxiety and 0.86 for trait anxiety in a prior study (S. S. Kim, 2003).

resilience

时间窗: one month after the intervention

Resilience was assessed using the Korean version of the Resilience Scale (K-CD-RISC) developed by Connor and Davidson (2003) and standardized by Baek, Lee, Joo, Lee, and Choi (2010). This selfreported instrument consists of 25 items scored on a 5-point scale ranging from 0 (not at all) to 4 (almost always). The scale comprises five factors: hardiness, persistence, optimism, support, and spirituality. Scores range from 0 to 100, with higher scores indicating higher levels of resilience. The Cronbach's α was 0.89 in a previous study (Connor \& Davidson, 2003).

post-traumatic stress

时间窗: one month after the intervention

PTS was measured using the PCL-5, which was developed by Weathers et al. (2013), revised by Weathers et al. (1993) as per the revised PTSD definition in the DSM-5, and translated into Korean by Kim et al. (2017). The Korean version of the PCL for the DSM-5 (PCL-5-K) contained 20 items, and each scored from 0 (not at all) to 4 (extremely). The score depended on the severity of the symptom caused by stress related to traumatic events during the past month. Possible scores ranged from 0 to 80, with a score of 37 or above indicating a PTSD diagnosis, and higher scores suggesting severe PTSD symptoms (2013). Cronbach's alpha coefficient for the PCL-5-K was .97 among Korean veterans of the Vietnam War (2017).

functional health

时间窗: one month after the intervention

The Functional Health Pattern Assessment Screening Tool (FHPAST) was developed by Jones (2002) and adapted by Keum and Kim (2012). The FHPAST is a self-report scale consisting of 58 items, each with a 4-point scale (1 to 4). Sixteen questions (43-58) are reverse scored. Mean scores of three or higher indicate that the physiological-spiritual function is at a healthy level and the individual is ready for health promotion. In the Jones study (2002), the reliability was Cronbach's α = .70 and .90.

social support

时间窗: one month after the intervention

Social support was measured using the Social Provisions Scale (SPS), developed by Cutrona and Russell (1987) and translated into Korean by Yoo and Lee (2006). The instrument comprises 24 items, rated using a four-point Likert scale ranging from 1 (strongly disagree) to 4 (strongly agree). It has six subscales assessing attachment, social integration, the opportunity for nurturance, reassurance of worth, reliable alliance, and guidance. Each subscale comprises four items. The total score on social support was calculated by adding the scores of all items and ranged from 24 to 96. Higher scores indicated higher levels of perceived social support. Cronbach's alpha coefficients for the Social support were 0.92 in a prior study (Cutrona \& Russell, 1987), 0.94 among Korean male adults (Je, 2014).