Table 5.

Correlation of Questionnaires in Reproducibility Cohort (Phase 2)

Summary Statistics	Six-Item Questionnaire	SNQ
Visit 1
Mean (SD)	1.33 (0.50)	1.18 (0.59)
Median (range)	1.33 (0.16–2.33)	1.20 (0.00–2.40)
Visit 2
Mean (SD)	1.16 (0.59)	1.28 (0.59)
Median (range)	1.17 (0.00–2.17)	1.40 (0.00–2.20)
Difference
Mean (SD)	0.16 (0.39)	−0.10 (0.24)
Median (range)	0.17 (−0.83–1.17)	0.00 (−1.00–0.60)
p Value*	0.0002	0.0018
Concordance correlation coefficient (95% CI)	0.71 (0.56–0.81)	0.91 (0.84–0.94)
Change in diagnosis, No. (%)†	13 (20.63)	3 (4.76)

Total, n = 63.

*Calculated using the Wilcoxon rank sum test.

†The SNQ has a significantly lower number of diagnosis changes based on the McNemar test (p = 0.0094).