Table 4 Reported intra-cluster correlation coefficients for primary outcomes (N = 8)
Author (Year) | Cluster unit | Health area | Outcome | Outcome type | ICC (95% CI) |
|---|---|---|---|---|---|
Jago (2012) [36] | Schools | Physical activity | MVPA (minutes per weekday) | Continuous | 0.018 (< 0.001 to 0.087) |
Jago (2014) [37] | Schools | Physical activity | MVPA (minutes per weekday) | Continuous | 0.0653 (0.00091 to 0.12977) |
Kipping (2008) [39] | Schools | Physical activity and nutrition | Minutes spent on screen-based activities | Continuous | 0.01 (0 to 0.03) |
Lloyd (2012) [40] | Schools | Physical activity and nutrition | BMI SD score | Continuous | 0.04 (0 to 0.15) |
Sahota (2019) [45] | Schools | Physical activity and nutrition | Healthy nutrition and physical activity knowledge | Continuous | 0.07 (Not provided) |
Sebire (2018) [46] | Schools | Physical activity | MVPA (minutes per weekday) | Continuous |  < 0.0001 (0.0 to 0.03) |
Segrott (2015) [47] | Schools | Alcohol misuse | Drinking initiation | Binary | 0.112 (Not provided) |
White (2017) [49] | Schools | Illicit drug misuse | Lifetime illicit drug use | Binary | 0.003 (Not provided) |