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Table 4 Screening models for OSA risk

From: Novel screening model of obstructive sleep apnea for snorers with suspected NAFLD undergoing liver sonography

Predictors Logistic regression Receiver operating characteristic curve
OR (95% CI) p value Cutoff value sensitivity specificity PPV NPV AUC
Original models
 Male 4.2 (1.02–17.05) 0.047 Male 87% 39% 83% 46% 0.63
 BMI 8.1 (2.06–31.88)  < 0.01  > 24.8 78% 69% 90% 47% 0.75
 CAP 2.4 (0.69–8.44) 0.17  > 243.5 67% 54% 84% 32% 0.54
 HSI 10.1 (1.21–84.03) 0.03  > 38.3 46% 92% 96% 32% 0.72
Combined models Adjusted OR (95% CI) p value Predictors      
 Model A     ≥ 3 65% 85% 94% 41% 0.75
  Male 2.5 (0.5–12.4) 0.28       
  BMI > 24.8 5.3 (1.1–25.6) 0.04       
  CAP > 243.5 0.6 (0.1–3.0) 0.54       
  HSI > 38.3 6.4 (0.7–61.2) 0.11       
 Model B     ≥ 2 80% 62% 88% 47% 0.71
  Male 2.4 (0.5–11.7) 0.28       
  BMI > 24.8 7.0 (1.5–33.6) 0.02       
  CAP > 243.5 0.9 (0.2–4.2) 0.87       
 Model C     ≥ 2 78% 85% 95% 52% 0.81
  Male 2.3 (0.5–11.1) 0.30       
  BMI > 24.8 4.5 (1.0–19.4) 0.045       
  HSI > 38.3 5.6 (0.6–51.9) 0.13       
  1. Significant p values are marked in bold
  2. AUC area under the curve, BMI body mass index, CAP controlled attenuation parameter, CI confidence interval, HSI hepatic steatosis index, NPV negative predictive value, OR odds ratio, PPV positive predictive value