Figure 3

Trend result of family social support moderating 18 month physical activity. Note: Results above are predicted values based on a multiple regression model that included Arm (t = 0.65, df = 147, p = 0.52), family social support (t = 0.86, df = 147, p = 0.39), residualized change score of physical activity from baseline to 12 months (t = 6.54, df = 147, p < 0.0001), and arm X family social support (t = 1.88, df = 147, p = 0.06) predicting moderate- to vigorous-intensity physical activity (Mod+) at 18 months. Using standard conventions for modeling interaction effects, the y-axis represents the predicted value at 18 months of physical activity (i.e., kilocalories burned per kilogram per day that was in the moderate to vigorous intensity range) for those high and low in social support at baseline between the automated advisor and human advisor groups. Low SS = one Standard deviation below mean for family social support; High SS = One standard deviation above the mean for family social support. This is based on previous conventions for graphing moderation analyses as described above.