Abstract
Objectives
To evaluate if adding motivational interviewing (MI) or a stratified
vocational advice intervention (SVAI) to usual case management (UC),
reduced sickness absence over 6 months for workers on sick leave due to
musculoskeletal disorders.
Methods
We conducted a three-arm parallel pragmatic randomised controlled
trial including 514 employed workers (57% women, median age 49 (range
24–66)), on sick leave for at least 50% of their contracted work hours
for ≥7 weeks. All participants received UC. In addition, those
randomised to UC+MI were offered two MI sessions from social insurance
caseworkers and those randomised to UC+SVAI were offered vocational
advice from physiotherapists (participants with low/medium-risk for
long-term sickness absence were offered one to two sessions, and those
with high-risk were offered three to four sessions).
Results
Median sickness absence was 62 days, (95% CI 52 to 71) in the UC arm
(n=171), 56 days (95% CI 43 to 70) in the UC+MI arm (n=169) and 49 days
(95% CI 38 to 60) in the UC+SVAI arm (n=169). After adjusting for
predefined potential confounding factors, the results showed seven fewer
days in the UC+MI arm (95% CI −15 to 2) and the UC+SVAI arm (95% CI −16
to 1), compared with the UC arm. The adjusted differences were not
statistically significant.
Conclusions
The MI-NAV trial did not show effect on return to work of adding MI
or SVAI to UC. The reduction in sickness absence over 6 months was
smaller than anticipated, and uncertain due to wide CIs.
Trial registration number
NCT03871712.
Funder
Research
Council of Norway
Subject
Public Health, Environmental and Occupational Health
Cited by
5 articles.
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