Fig 1.
Shows the age group of the patient and the mean IPSS and SQNS per age group.
Fig 2.
Shows the two by two table used to calculate the sensitivity and specificity of SQNS.
Sensitivity=87%, Positive Predictive value=89%, Specificity=91%,Negative predictive vale=89%. Abbreviations: IPSS: International Prostate Symptom Score, SQNS: Single Question Noctura Score.
Fig 3.
Shows the correlation coefficient of the SQNS relative to the IPSS.
Pearson Correlation Co-efficient=0.74.