Abstract
Background
Cognitive-behavioral therapy for insomnia (CBT-I) may improve productivity along with insomnia symptoms, but the long-term duration of productivity gains is unknown.
Purpose
In this secondary analysis, effects of Internet-delivered CBT-I on work-related and daily activity productivity were examined through 1 year post-treatment.
Methods
Adults with chronic insomnia (N = 303) were randomized to Internet-delivered CBT-I (Sleep Healthy Using the Internet [SHUTi]) or to patient education (PE). Participants reported interference with attendance (absenteeism) and productivity (presenteeism) at paid employment and in daily activities outside work on the Work Productivity Activity Impairment scale at baseline, 9 weeks later for postintervention assessment (post-assessment), and 6- and 12-month follow-ups.
Results
Participants randomized to SHUTi were about 50% less likely than those in the PE condition to report any absenteeism (logistic regression odds ratio [OR] = 0.48 [95% confidence intervals {CI} = 0.24,0.96]), total impairment (OR = 0.52 [95% CI = 0.29,0.93]), or activity impairment (OR = 0.50 [95% CI = 0.30,0.85]) at post-assessment; however, differences were not detected at 6- or 12-month follow-ups. SHUTi participants also reported lower overall levels of presenteeism (constrained longitudinal data analysis MDiff = −6.84 [95% CI = −11.53, −2.15]), total impairment (MDiff = −7.62 [95% CI = −12.50, −2.73]), and activity impairment (MDiff = −7.47 [95% CI = −12.68, −2.26]) at post-assessment relative to PE participants. Differences were sustained at 6-month follow-up for presenteeism (MDiff = −5.02 [95% CI = −9.94, −0.10]) and total impairment (MDiff = −5.78 [95% CI = −10.91, −0.65]). No differences were detected by 12-month follow-up.
Conclusions
Findings suggest that Internet-based CBT-I may help accelerate improvement in work-related and daily activity impairment corroborating prior research, but did not find that CBT-I has persistent, long-term benefits in productivity relative to basic insomnia education.
Trial Registration
NCT00328250 “Effectiveness of Internet Cognitive Behavioral Therapy Intervention for Treating Insomnia” (https://clinicaltrials.gov/ct2/show/NCT00328250).
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