1. The purpose of the study was to validate a self-reported sitting time questionnaire across demographically diverse populations. 2. The gold standard method being used was an accelerometer to objectively measure sitting time. 3. They were conducting construct and criterion validity testing by comparing the self-reported sitting times to the objective accelerometer measurements. 4. The subjective measure was the self-reported sitting time questionnaire and the objective measure was the accelerometer. 5. They used correlations and Bland-Altman plots to establish validity by comparing the self-reported and objective sitting time measurements.