Evaluating the Carrot Rewards App, a Population-Level Incentive-Based Intervention Promoting Step Counts Across Two Canadian Provinces: Quasi-Experimental Study.

At study week 12, compared with baseline, a highly significant decrease of 480.82 steps per day was observed among physically active participants ( Table 2 ; 95% CI −545.17 to −416.46, P <.001, Cohen f 2 =0.0073, P <.001).

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