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. 2021 Jul 26;14(8):e007781. doi: 10.1161/CIRCOUTCOMES.120.007781

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© 2021 American Heart Association, Inc.

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Figure 3. — Representativeness of pain experience characterized via variable number of measurements. Difference in patient-level pain scale ranging 0 to 10 (y axis) over 10 measurements vs over k measurements (x axis). Using only one measurement of pain at the beginning or end of the measurement yielded approximately 2-point differences when compared with average pain level of 10 measurements over 30 d. Blue circles are counting number of measurements from the first postoperative survey and orange circles are counting from the last survey. This difference diminished incrementally with every 15, 9, and 6 d of measurements.