PMP22 and diabetes mellitus: When the analyses were repeated for the CIDP + DM subjects compared to type 1 (Table 3) and type 2 (Table 4) D-DSP subjects separately, similar findings were demonstrated with the exception that the differences in HbA1c values were found only between CIDP + DM patients and type 1 D-DSP subjects (7.7 ± 2.0 [61 ± 21.9 mmol/mol], 9.6 ± 2.4 [81 ± 26.2 mmol/mol], P = 0.003) (Table 3).