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. 2018 Apr 12;2018:9643937. doi: 10.1155/2018/9643937

Table 2.

Agreements tests between “good” and “poor” sleeper scored by original and “shortPSQI.”

Original survey “shortPSQI” Total
Poor sleepers Good sleepers
Poor sleepers 423 84 507
Good sleepers 19 720 739
Total 442 804 1246

Kappa value 0.83 indicates an agreement (p < 0.001) between original and “shortPSQI,” based on a cut-off of 5 and 4 in PISQ and “shortPSQI,” respectively; McNemar's test indicated a lack of agreement (p < 0.0001) or, rather, a lack of symmetry of false negative and false positive proportions. Based on the analyses, all global values greater than 4 in “shortPSQI” total score are detecting poor sleepers.