Table 1.

Clinical characteristics of patients with painful and nonpainful diabetic polyneuropathy.

	Painful DPN	Nonpainful DPN	P
TCNS*	11.4 ± 4.3	9.3 ± 4.0	<0.001
CDT†	−1.9 (−2.1, −1.8)	−1.5 (−1.7, −1.2)	0.004
WDT†	−1.5 (−1.6, −1.4)	−1.3 (−1.4, −1.1)	0.012
MDT†	−1.7 (−2, −1.4)	−0.8 (−1.2, −0.5)	0.001
VDT†	−2.2 (−2.5, −1.8)	−1.8 (−2.4, −1.2)	0.293

^*TCNS (mean ± SD).

^†The QST results presented in z scores—mean (lower 95% CI, upper 95% CI).

CDT, cold detection threshold; CI, confidence interval; DPN, diabetic polyneuropathy; MDT, mechanical detection threshold, QST, quantitative sensory testing; TCNS, Toronto Clinical Neuropathy Score; VDT, vibration detection threshold; WDT, warm detection threshold.