Table 2

Means and SDs for the ITT sample (iSMI: N=131; WLC: N=132) at pre-treatment (T1) and post-treatment (T2), and 6-month follow-up (T3)

Primary outcome
Mental health
Work-related health
  • *Missing data imputed by multiple imputation.

  • ‡Higher scores indicate better outcomes.

  • §In relation to the previous 3 months.

  • A, acceptance; CES-D, Center for Epidemiological Studies’ Depression Scale; C, comprehension; ERSQ, Emotion Regulation Skills Questionnaire; ES-GD, emotion-specific version-general distress; HADS-A, subscale of the Hospital Anxiety and Depression Scales; ISI, Insomnia Severity Index; iSMI, internet-based stress management intervention; ITT, intention-to-treat; MBI-EE, Emotional Exhaustion Subscale of the Maslach Burnout Inventory; NA, not available for this assessment point; PSS-10, Perceived Stress Scale; PSWQ-PW, Penn State Worry Questionnaire-Past Week; REQ-PD, Psychological Detachment Subscale of the Recovery Experience Questionnaire; SF-12 MH, Quality of Life (mental health component); SF-12 PH, Quality of Life (physical health component); SS, self-support; UWES, Utrecht Work Engagement Scale; WLC, wait-list control group.