Figure 2From: Validity of the international physical activity questionnaire and the Singapore prospective study program physical activity questionnaire in a multiethnic urban Asian population 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).Back to article page