At 3 months after discharge , the tailored intervention group ( n = 7 ) had a significantly higher median level of overall physical activity ( median 5613.0 , IQR 2828.0 ) than the control group ( n = 12 , median 1356.0 , IQR 2937.0 ; Kolmogorov-Smirnov Z = 1.397 , P = .02 , r = .33 ) .