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. 2018 May 31;18:681. doi: 10.1186/s12889-018-5588-1

Table 3.

Phase 3 reliability results (n = 13 paired responses; SEA Change and GenR8 Change coalition members)

Construct and domains # items Max. score Mean score (SD)a Two-week test-retest reliability Internal scale consistency
(Cronbach’s α)
ICC (95% CI) WSCV (95% CI) Test Retest Average
Knowledge
Composite 18 25 22.24 (1.28) 0.84 (0.62–0.95) 0.02 (0.01–0.03) 0.83 0.81 0.81
Domain-specific
1. Problem 3 5 4.74 (0.43) 0.43 (0.11–0.82) 0.06 (0.04–0.09) 0.95 0.23 0.68
2. Intervention factors 6 5 4.60 (0.30) 0.67 (0.35–0.89) 0.03 (0.02–0.05) 0.72 0.44b 0.58
3. Roles 3 5 4.64 (0.35) 0.82 (0.57–0.94) 0.03 (0.02–0.05) 0.14 0.58 0.35
4. Sustainability 3 5 4.00 (0.51) 0.59 (0.25–0.86) 0.08 (0.05–0.11) 0.76 0.89 0.82
5. Resources 3 5 4.26 (0.58) 0.78 (0.51–0.92) 0.06 (0.04–0.09) 0.78 0.68 0.74
Engagement
Composite 25 25 21.34 (1.77) 0.58 (0.23–0.86) 0.05 (0.03–0.08) 0.88 0.94 0.91
Domain-specific
1. Dialogue & mutual learning 7 5 4.73 (0.32) 0.54 (0.20–0.85) 0.05 (0.04–0.08) 0.79 0.93 0.88
2. Flexibility 3 5 4.28 (0.56) 0.40 (0.09–0.82) 0.09 (0.06–0.14) 0.85 0.77 0.82
3. Influence & power 2 5 3.81 (0.83) 0.55 (0.21–0.85) 0.13 (0.09–0.21) 0.93 0.66 0.84
4. Leadership & stewardship 10 5 4.32 (0.43) 0.53 (0.19–0.84) 0.06 (0.04–0.09) 0.81 0.80 0.81
5. Trust 3 5 4.21 (0.32) 0.25 (0.02–0.84) 0.10 (0.07–0.15) 0.56 0.84 0.78

ICC intraclass correlation coefficient, WSCV within-subject coefficient of variation, CI confidence interval

aScores calculated from test data. All items were on a 5-point agree/disagree Likert scale. Data were weighted to reflect the number of items per domain to ease domain-to-domain comparisons. Composite scores are a mean of the total, not a sum of means; therefore, domain scores may not add up to composite score

bOne item was dropped in the analysis due to zero variance (“Preventing obesity early in life is important”)