Table 2

APSQ ROC curve and cut-point values (including bias-corrected AUC and 95% CIs)

APSQ cut-offAPSQ positive
(% distribution)
Sensitivity, %Specificity, %Diagnostic ORAUC
(95% CI)
BC AUC
(95% CI)
Youden’s (J)IndexK-10 categoryK-10 positive
(% distribution)
≥15
‘Moderate’
n=407 (upper 38.0)84.879.321.310.901***
(0.880 to 0.922)
0.901***
(0.879 – 0.920)
0.641‘Moderate’n=289
(upper 26.7)
≥17
‘High’
n=289
(upper 23.2)
93.479.254.060.944***
(0.926 to 0.962)
0.944***
(0.924 to 0.960)
0.726‘High’n=91
(upper 8.3)
≥20
‘Very high
n=170
(upper 12.8)
95.585.8126.790.951***
(0.918 to 0.984)
0.951***
(0.910 to 0.977)
0.813‘Very highn=22
(upper 2.0)
  • BC 95% CI with 10 000 bootstrap resamples.

  • ***p<0.001.

  • APSQ, Athlete Psychological Strain Questionnaire; AUC, area under curve; BC, Bias corrected; K-10, Kessler 10.