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. 2013 Mar 1;346:f576. doi: 10.1136/bmj.f576

Table 2.

 Effect of intervention (in hours/week) on level of physical activity measured with LASA physical activity questionnaire (LAPAQ; primary outcome)

Time point ParkFit Controls Estimated difference (95% CI)* P value
No Median (IQR) No Median (IQR)
Baseline 299 12.8 (8.3-20.3) 287 13.8 (8.3-23.9) 7% (−3% to 17%) 0.19
6 months 285 13.2 (9.2-20.5) 277 14.2 (8.5-22.0)
12 months 281 12.5 (7.2-21.1) 277 12.4 (7.3-17.9)
18 months 277 12.3 (7.0-19.0) 271 12.3 (6.8-19.1)
24 months 273 12.5 (6.3-18.4) 267 12.0 (7.0-18.3)

IQR=interquartile range.

*Estimated relative difference, based on mixed model analysis.