Correlation of Single Assessment Numeric Evaluation (SANE) with other Patient Reported Outcome Measures (PROMs)

Abstract

Background: The Single Assessment Numeric Evaluation (SANE) is a simple, one-question patient-reported outcome<br />measure (PROM). We systematically reviewed correlations between SANE and more extensive PROMs.<br />Methods: We identified studies with correlation coefficients between SANE and other shoulder, knee, and anklespecific<br />PROMs. We calculated mean, median and range across studies and time points of data collection.<br />Results: Eleven studies provided 14 correlations, six shoulder-specific PROMs in four studies, six knee-specific PROMs<br />in six studies and two ankle specific PROMs in one study. The mean correlation comparing SANE and knee-specific<br />PROMs was 0.60 (SD 0.24), median 0.66, and range 0.12 to 0.88. Among studies comparing SANE and shoulderspecific<br />PROMs mean correlation was 0.59 (SD 0.20), median 0.62 and range 0.20 to 0.89. The mean correlation<br />between SANE and ankle-specific PROMs was 0.69 (SD 0.17), median 0.69 and range 0.75 to 0.81.<br />Conclusion: There seems to be moderate correlation amongst PROMs, even those that are a single question. Future<br />research might address whether patient reported outcome measure a common underlying construct even when they<br />consist of a single question.<br />Level of evidence: V