Table 2

Simulation results
Constant differences Increasing differences Decreasing differences
6 months 12 months 18 months 6 months 12 months 18 months 6 months 12 months 18 months
HE 0.05 0.10 0.15 HE 0.05 0.10 0.15 HE 0.05 0.10 0.15
MAPS 0.15 0.20 0.25 MAPS 0.10 0.20 0.30 MAPS 0.20 0.20 0.20
difference 0.10 0.10 0.10 difference 0.05 0.10 0.15 difference 0.15 0.10 0.05
ICC power 95% CI ICC power 95% CI ICC power 95% CI
0.10 0.99 0.98-1.00 0.10 0.99 0.98 1.00 0.10 0.99 0.98-1.00
0.30 0.94 0.93-0.95 0.30 0.95 0.94 0.96 0.30 0.98 0.97-0.99
0.50 0.79 0.76-0.82 0.50 0.84 0.82 0.86 0.50 0.98 0.97-0.99

Note: HE = Health Education; MAPS = Motivation And Problem Solving; ICC = intraclass correlation coefficient; CI = confidence interval.

Castro et al.

Castro et al. BMC Public Health 2013 13:237   doi:10.1186/1471-2458-13-237

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