Participants and Procedures
Data for the present study were collected as part of standard clinical intake evaluations conducted at one of two community, non-VA outpatient mental health clinics treating veterans and service members: Home Base, a partnership between the Red Sox Foundation and Massachusetts General Hospital (MGH; Boston, MA) (n = 176) and the Road Home Program at Rush University Medical Center (Chicago, IL) (n = 39). Both outpatient clinics offer mental health services to veterans, service members, and their families free of charge. The combined study sample is comprised of 215 veterans and service members who reported having at least one child between the ages of 4 and 17 years and completed the Pediatric Symptom Checklist-17 (PSC-17) [17]. Patients in this sample had a mean age of 37.4 years (SD = 7.9) and 13.3% (n = 28) were female. Additional demographic characteristics are displayed in Table 1.
Table 1 Demographic characteristics
Measures
Veteran Demographic Information
Veterans’ demographic information including age, sex, relationship status, whether or not they deployed while in the military, military rank, military branch, and military status were gathered during the intake evaluation process.
Veteran Measures
Depression, Anxiety, and Stress
Symptoms common to depression and anxiety were assessed using the depression anxiety stress scales (DASS-21) a 21-item self-report measure with three subscales for the respective symptom clusters [18]. Veterans were asked to rate how much each statement applied to them over the past week on a 4-point Likert scale, ranging from 0 (Never) to 3 (Almost always). Scale scores are calculated by summing the seven items in each scale such that higher ratings represent higher levels of pathology. Studies indicate that the depression (DASS-D), anxiety (DASS-A), and stress (DASS-S) scales are able to distinguish well between the features of dysphoria, acute physiological arousal, and chronic tension, respectively [19]. Studies with a variety of samples, including veterans, have demonstrated that the DASS-21 has good validity and reliability [20, 21]. Internal consistency reliability for the depression, anxiety, and stress subscales of the DASS-21 in the present study were 0.92, 0.89, and.90, respectively.
Posttraumatic Stress Disorder
Home Base assessed PTSD using the PTSD Checklist—Civilian Version (PCL-C) a 17-item self-report measure assessing symptoms PTSD based on the diagnostic and statistical manual (DSM) Fourth Edition [22]. Veterans were asked to report “how much each problem has bothered them during the past week” on a 5-point Likert scale, ranging from 1 (Not at all) to 5 (Extremely). The PCL-C has been shown to have good validity and reliability in veteran samples [23, 24]. The Road Home Program assessed PTSD using the 20-item self-reported PTSD Checklist for DSM-5 (PCL-5) [25]. Veterans were asked to report “how much they have been bothered by the worst event in the last month” on a 5-point Likert scale, ranging from 0 (Not at all) to 4 (Extremely). Similar to the PCL-C, the PCL-5 has been validated and shown to have good reliability in samples of veterans [26, 27]. In order to be able to combine the two samples for the present study, the 16 common items on the PCL-C and PCL-5 were used to calculate a total score. Internal consistency for the modified version of the PCL used in this study was 0.96, indicating good reliability of this modified measure.
Parenting Sense of Competence
Veterans’ sense of parental competence was assessed using the Parenting Sense of Competence Scale (PSOC) [28], a 16-item self-report assessment. Veterans are asked to report the extent to which they agree with various parenting-related statements on a 6-point Likert scale ranging from 1 (Strongly disagree) to 6 (Strongly agree). Higher scores reflect a greater sense of competence in one’s parenting. The PSOC has been shown to have good validity and reliability in a variety of samples, including veterans [15]. Internal consistency for the present study was 0.86.
Child Measures Completed by the Veteran
Pediatric Symptoms
The Pediatric Symptom Checklist-17 (PSC-17) was used to assess mental health symptoms in veterans’ offspring [17]. The PSC-17 is a 17-item self-report screening tool completed by children’s caregivers. The PSC-17 has been found to have good validity and reliability and to provide comparable results to other well-established pediatric symptom measures [29,30,31,32]. The PSC-17 contains three subscales that capture internalizing (PSC-I), externalizing (PSC-E), and attention symptoms (PSC-A). Internalizing, externalizing, attention problems, and total symptoms are present at clinically significant levels if subscale scores are greater than or equal to 5, 7, 7, and 15, respectively [17]. At Home Base, veterans were asked to complete the measure for the child about whom they were most concerned. At the Road Home Program, veterans were asked to complete the PSC-17 on all of their children; to combine the Road Home data with the Home Base data, the most symptomatic child was identified and selected for analysis based on the highest total PSC-17 score. Internal consistency for the internalizing, externalizing, and attention subscales for the present study were 0.82, 0.86, 0.83, respectively. Internal consistency for the total score was 0.91.
Procedures
As part of their initial clinical evaluation, patients with a child between the ages of 4 and 17 completed self-report screening measures including the DASS-21, PCL-5, PSOC, and the PSC-17. Demographic and diagnostic data were routinely collected as part of the baseline clinical assessment of each patient. Clinical data were maintained in two database repositories approved by the Massachusetts General Hospital (Partners Healthcare) and the Rush University Medical Center Institutional Review Boards with a waiver of consent because all assessments were collected as part of routine clinical care procedures.
Data Analyses
Independent samples t-tests were conducted to test for site (MGH vs. Rush) differences in veteran psychopathology, offspring psychopathology, and parenting sense of competence. There were no significant differences on these measures by site (all p > .24). Given the similar intake evaluation processes at Home Base and the Road Home Program and the lack of statistically significant differences in any of the independent variables, mediators, or dependent variables, we combined the sample. We then conducted preliminary analyses to evaluate the relationship between possible demographic covariates and PSC-17 scores. Men reported that their child experienced lower symptoms on the PSC-17 internalizing subscale than women did; thus, parent sex was included as a covariate in subsequent mediation analyses involving the internalizing subscale. Veteran age, relationship status, deployment status, military rank, military branch, and military status were not significantly associated with PSC-17 scores. Therefore, they were not included as covariates in mediation analyses.
Out of the 215 participants, 32 were missing scores on the modified PCL, DASS-21, or PSOC. The presence of missing data was unrelated to any of the PSC-17 variables, suggesting that the data were missing at random (MAR). Studies have shown that full-information maximum likelihood estimation (FIML) is superior to pairwise or listwise deletion under conditions of MAR [33]. Thus, we conducted FIML using Mplus version 7.3 [34] to run all analyses. Based on results from bivariate analyses, we thus tested a path analytic model examining PSOC as a mediator of the relationship between veteran psychopathology and child psychopathology. In order to determine model fit, relative Χ
2, root mean square error of approximation (RMSEA), comparative fit index (CFI), and standardized root mean squared residual (SRMR) were assessed. A Χ
2/df below 3.0, an RMSEA below 0.06, a SRMR below 0.08, and a CFI above 0.9 were considered to denote adequately-fitting models [35,36,37]. In addition, we calculated the 90% confidence interval (CI) for the RMSEA, and the p-value for test of close fit RMSEA ≤ 0.05.