Table 4. Comparison of CSBSS characteristics for development and validation datasets (at cut-off score 41.7).

CSBSS: clinical symptom-based scoring system

Characteristics	Development dataset (70%) (95% CI)	Validation dataset (30%) (95% CI)
% Sensitivity (95% CI)	64.6 (54.2-74.1)	64.7 (46.5-80.3)
% Specificity (95% CI)	62.1 (54.4-69.5)	58.6 (46.2-70.2)
% Positive Predictive Value (95% CI)	49.2 (40.2-58.3)	43.1 (29.3-57.8)
% Negative Predictive Value (95% CI)	75.5 (67.5-82.4)	77.4 (63.8-87.7)
AUC (95% CI)	0.71 (0.61-0.81)	0.69 (0.62-0..76)