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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

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BMC Public Health

ISSN: 1471-2458

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