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Table 4 Return-on-Investment analysis results (main analysis)

From: Six-month cost-effectiveness of adding motivational interviewing or a stratified vocational advice intervention to usual case management for workers with musculoskeletal disorders: the MI-NAV economic evaluation

Sample size

Costs (95% CI)

Benefits Total (95% CI)

Net benefit (95% CI)

Benefit Cost Ratio (95%CI)

Comparison 1 (UC + MI vs. UC)

    MI + UC

UC

    169

171

53 (47 to 58)

2874 (-563 to 6299)

2821 (-617 to 6246)

54 (-10 to 124)

Comparison 2 (UC + SVAI vs. UC)

    SVAI + UC

UC

    169

171

78 (72–84)

3706 (548 to 7049)

3628 (388 to 6911)

48 (6 to 91)

  1. C Costs, E Effects, ICER Incremental Cost-Effectiveness Ratio, CE-plane Cost-Effectiveness plane, NE Northeast-Quadrant, SE Southeast-Quadrant, NW Northwest-Quadrant, ZW Southwest-Quadrant, CI Confidence Interval, UC usual case management, MI motivational interviewing, SVAI stratified vocational advice intervention, SEM standard error of the mean