Kelaa Mental Resilience App for Employees

Self-reported levels of stress were assessed with the two subscales General Stress (four items, e.g., "How often have you been stressed?") and Cognitive Stress (four items, e.g., "How often have you had problems concentrating?") from the Copenhagen Psychosocial Questionnaire - Revised Version (COPSOQ II; Pejtersen et al., 2010).The items were answered on a five-point scale (1 = not at all; 2 = a small part of the time; 3 = part of the time; 4 = a large part of the time; 5 = all the time). Higher values indicate more stress.

Subjective wellbeing was measured with the Warwick-Edinburgh Mental Wellbeing Scale (Tennant et al., 2007). Seven items (e.g., "I've been feeling relaxed.") were answered on a five-point scale (1 = none of the time; 2 = rarely; 3 = some of the time; 4 = often; 5 = all of the time). Higher values indicate more wellbeing.

We assessed resilience with the 13-item Resilience Scale (RS-13; Leppert et al., 2008), a short form of the Resilience Scale (RS-25; Wagnild and Young, 1993). Items (e.g., "I usually take things in stride.") were answered on a seven-point scale (1 = strongly disagree to 7 = strongly agree). Higher values indicate more resilience.

Participants were asked about sleeping troubles with the subscale Sleeping Troubles from the COPSOQ II (Pejtersen et al., 2010). Four items (e.g., "How often have you slept badly and restlessly?") were answered on a five-point scale (1 = not at all; 2 = a small part of the time; 3 = part of the time; 4 = a large part of the time; 5 = all the time). Higher values indicate more sleeping troubles.

Participants indicated their sense of cooperation and social community at work with the subscale Social Community at Work from the COPSOQ II (Pejtersen et al., 2010). Three items (e.g., "Do you feel part of a community at your place of work?") were answered on a five-point scale (1 = not at all; 2 = a small part of the time; 3 = part of the time; 4 = a large part of the time; 5 = all the time). Higher values indicate more sense of social community.

We assessed participants self-reported physical health levels with the SF-36 Version 2 (Jenkinson et al., 1999). Participants were asked to indicate their agreement to four items (e.g., "Because of your physical health, you were limited in the kind of work or other activities.") on a scale from 1 = none of the time to 5 = all of the time. Higher values indicate worse physical health.

The Work Productivity and Activity Impairment Questionnaire: General Health V2.0 (WPAI:GH; Reilly et al., 1993) asked participants about the impact of health problems on their ability to work and perform regular activities over the past week. Three items (i.e., "During the past 7 days, how many hours did you miss from work because of your health problems?" "…, how many hours did you miss from work because of any other reason, such as vacation, holidays, time off to participate in this study?" "…, how many hours did you actually work?") were provided with open text fields. Two items asked for a rating on a bipolar 11-point scale (e.g., "…, how much did your health problems affect your productivity while you were working?"; 0 = Health problems had no effect on my work to 10 = Health problems completely prevented me from working).