SRPAQ was administered in a telephone interview two months after a study PAQ asking about PA at ages 30-49 years and 50+ years. Total PA scores were derived from both interviews as MET-hours per week. Difference between total PA score of both questionnaires to identify agreement (95% limits of agreement)
110 cases and 101 controls, age 50-74 years enrolled in breast cancer study
SRPAQ vs study PAQ (95% limits of agreement -114 and 120 MET hrs/wk.
For 28.9%, absolute differences were 35-75 MET hr/wk.