Table 2. Cronbach's Alpha to the Items of the Instrument.

Items	Cronbach's alpha-removing the item	Inter-rater reliability–Cohen's kappa
Burning	0.807	0.879
Painful cold	0.801	0.915
Electric shocks	0.791	0.846
Tingling	0.799	0.916
Pins and needles	0.815	0.908
Numbness	0.799	0.946
Itching	0.814	0.823
Hypoesthesia to touch	0.788	0.878
Hypoesthesia to prick	0.791	0.862
Brushing	0.818	0.913
Total Cronbach's alpha score/total Cohen's kappa	0.819	0.840