Table 2

Power calculation secondary outcomes
Secondary outcome: SD: Detectable difference:(n = 104, β=0.8 α=0.05)
Waist circumference 11 2.75 cm
Blood pressure sys/dias 20/20 5/5 mmHg
Total cholesterol 1.4 0.35 mmol/l
LDL cholesterol 1.0 0.25 mmol/l
HDL cholesterol 0.7 0.2 mmol/l
Triglyceride 3.0 0.75 mmol/l
HbA1c 12 3 mmol/mol
Insulin 50 12.5 IU
Depression (HADS score 0–21) 3 0.75
Anxiety (HADS score 0–21) 4 1.0
Self esteem (RSE score 10–40) 5 1.25
Fatigue (CIS score 8–56) 13 3.25
Concentration (CIS score 5–35) 8.5 2.1
Motivation (CIS score 4–28) 6 1.5
Activity (CIS score 3–21) 5 1.25
Quality of life (EuroQol 5D score 1–3) 0.5 0.125
Quality of life (EuroQol VAS 1–100) 21 5.25

Berk et al.

Berk et al. BMC Public Health 2012 12:1026   doi:10.1186/1471-2458-12-1026

Open Data