From: Evaluating fatigue in patients recovering from COVID-19: validation of the fatigue severity scale and single item screening questions
SISQ
Hospitalized
Non-hospitalized
Sensitivity
Specificity
PLR
NLR
Fatigue present
70.6%
70.2%
2.4
0.4
83.2%
57.5%
2.0
0.3
Always feeling tired
70.5%
76.4%
3.0
89.6%
58.7%
2.2
0.2