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Figure 2 | BMC Medical Research Methodology

Figure 2

From: Validity of the international physical activity questionnaire and the Singapore prospective study program physical activity questionnaire in a multiethnic urban Asian population

Figure 2

Bland-Altman plot for comparing the agreement between questionnaires and accelerometer measurements of vigorous activity. The difference of estimate of vigorous physical activity from the questionnaire and the accelerometer (y-axis) are depicted in relation to the mean of estimates of vigorous physical activity from the questionnaire and the accelerometer (x-axis).

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