Table 5. Comparison of abnormal neurological examination findings between patients and controls.

	Total Cohort (n = 312)	Controls (n = 47)	Specificity	PPV	NPV
Impaired reflexes
Knee	52%	4%	96%	99%	24%
Ankle	74%	38%	62%	92%	27%
Sensory deficits
Vibration	73%	23%	77%	95%	31%
Pinprick	72%	9%	91%	98%	34%
Temperature	60%	11%	89%	97%	27%
Light touch	45%	4%	96%	98%	23%
Proprioception	36%	2%	98%	99%	20%

PPV–Positive Predictive Value; NPV–Negative Predictive Value. p<0.0001 for each comparison between groups.