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Table 2 Smallest detectable differences in selected outcomes with 80% power (alpha = 0.05, two-sided p-value)

From: Safety and Health through Integrated, Facilitated Teams (SHIFT): stepped-wedge protocol for prospective, mixed-methods evaluation of the Healthy Workplace Participatory Program

Outcome Baseline value Detectable difference
Injury rate 0.71 / FTE .062 / FTE
Smoking Prevalence 25.6% 6.0%
BMI Z = 28, SD = 9 0.9
Health self-efficacy Z = 27, SD = 8.5 0.8
Work ability Z = 8.9, SD = 2 0.19