Table 1 Composite- and domain-level knowledge and engagement scores among Shape Up Under 5 Committee members (n = 16) and first-degree alters over the two-year pilot study period. Mean (SD) knowledge and engagement scores range from 0 (low) to 1 (high). The number of first-degree alters who were surveyed expanded at each measurement time as new alters were nominated by committee members

Knowledge

0.67 (0.07)

0.73 (0.09)

0.73 (0.08)*

0.78 (0.08)*

0.77 (0.09)*

0.027 (0.006)

0.0002

    Problem

0.75 (0.11)

0.80 (0.10)

0.79 (0.12)*

0.82 (0.11)

0.83 (0.10)*

0.021 (0.007)

0.007

    Intervention factors

0.73 (0.11)

0.78 (0.15)

0.80 (0.12

0.80 (0.10)

0.78 (0.14)

0.014 (0.005)

0.020

    Roles

0.60 (0.14)

0.59 (0.19)

0.64 (0.12)

0.68 (0.15)

0.70 (0.13)

0.029 (0.011)

0.010

    Sustainability

0.80 (0.13)

0.86 (0.11)*

0.84 (0.11)

0.87 (0.10)

0.85 (0.10)

0.010 (0.008)

0.200

    Resources

0.46 (0.11)

0.58 (0.19)*

0.59 (0.16)*

0.72 (0.12)*

0.67 (0.17)*

0.058 (0.011)

0.0002

Engagement

0.73 (0.14)

0.75 (0.12)

0.80 (0.12)*

0.79 (0.11)*

0.76 (0.13)

0.011 (0.005)

0.030

    Dialogue & mutual learning

0.82 (0.12)

0.84 (0.14)

0.85 (0.12)

0.88 (0.11)

0.82 (0.11)

0.006 (0.006)

0.300

    Flexibility

0.76 (0.16)

0.77 (0.15)

0.84 (0.13)*

0.83 (0.12)

0.78 (0.16)

0.014 (0.009)

0.200

    Influence & power

0.55 (0.30)

0.58 (0.24)

0.67 (0.23)

0.68 (0.21)

0.64 (0.29)

0.029 (0.011)

0.010

    Leadership & stewardship

0.77 (0.13)

0.75 (0.18)

0.78 (0.12)

0.76 (0.10)

0.74 (0.10)

-0.002 (0.006)

0.600

    Trust

0.78 (0.15)

0.81 (0.11)

0.86 (0.14)

0.82 (0.11)

0.82 (0.11)

0.009 (0.007)

0.200

First degree alters

n = 65

n = 133

n = 165

n = 186

n = 193

Knowledge

0.70 (0.10)

0.72 (0.10)

0.72 (0.09)

0.73 (0.11)

0.74 (0.11)

0.008 (0.002)

0.001

    Problem

0.72 (0.12)

0.77 (0.11)

0.78 (0.11)

0.79 (0.12)

0.80 (0.12)

0.012 (0.003)

0.0001

    Intervention factors

0.76 (0.11)

0.79 (0.13)

0.78 (0.12)

0.78 (0.13)

0.78 (0.13)

-0.001 (0.003)

0.843

    Roles

0.60 (0.14)

0.66 (0.16)

0.63 (0.17)

0.64 (0.17)

0.67 (0.18)

0.007 (0.004)

0.090

    Sustainability

0.82 (0.11)

0.80 (0.13)

0.83 (0.13)

0.82 (0.12)

0.83 (0.14)

0.004 (0.003)

0.153

    Resources

0.58 (0.15)

0.56 (0.15)

0.60 (0.16)

0.63 (0.20)

0.63 (0.22)

0.018 (0.005)

0.0003

Engagement

0.76 (0.07)

0.80 (0.09)

0.77 (0.10)

0.78 (0.10)

0.78 (0.10)

-0.001 (0.002)

0.662

    Dialogue & mutual learning

0.84 (0.08)

0.88 (0.11)

0.86 (0.11)

0.87 (0.13)

0.87 (0.12)

0.001 (0.003)

0.747

    Flexibility

0.73 (0.11)

0.83 (0.11)

0.79 (0.15)

0.80 (0.13)

0.80 (0.14)

0.003 (0.003)

0.245

    Influence & power

0.62 (0.16)

0.65 (0.18)

0.60 (0.19)

0.61 (0.22)

0.60 (0.22)

-0.013 (0.005)

0.004

    Leadership & stewardship

0.79 (0.09)

0.82 (0.11)

0.78 (0.11)

0.79 (0.11)

0.80 (0.11)

0.002 (0.002)

0.427

    Trust

0.80 (0.10)

0.80 (0.11)

0.80 (0.12)

0.82 (0.13)

0.83 (0.14)

0.009 (0.003)

0.004