Table 2—

Nerve function in 1982, 1990, and 1999 for tertiles of HbA1c

HbA1c tertilesHbA1c ≤ 7.8% (n = 13)HbA1c 7.9%–8.3% (n = 11)HbA1c ≥ 8.4% (n = 15)
Sensory sural NCV in 198251 m/s (4)49 m/s (5)47 m/s (7)
Sensory sural NCV in 199045 m/s (5)43 m/s (5)39 m/s (7)
Sensory sural NCV in 199944 m/s (10)44 m/s (11)34 m/s (15)
Number of patients with undetectable sural NCV in 1999115
Sensory sural NAPA in 19827.7 μV (5)8.3 μV (3)7.5 μV (3)
Sensory sural NAPA in 19908.3 μV (4)6.7 μV (2)5.9 μV (4)
Sensory sural NAPA in 19999.8 μV (9)4.8 μV (4)*3.4 μV (4)
Motor tibial NCV in 198248 m/s (5)46 m/s (5)47 m/s (7)
Motor tibial NCV in 199042 m/s (3)43 m/s (4)38 m/s (5)
Motor tibial NCV in 199943 m/s (6)*43 m/s (4)31 m/s (11)
Number of patients with undetectable tibial NCV in 1999004
Tibial NAPA in 19994.9 mV (3)4.9 mV (2)2.6 mV
Motor peroneal NCV in 198244 m/s (4)46 m/s (4)41 m/s (4)
Motor peroneal NCV in 199042 m/s (2)44 m/s (4)38 m/s (5)
Motor peroneal NCV in 199941 m/s (4)42 m/s (4)35 m/s (8)*
Number of patients with undetectable peroneal NCV in 1999001
NAPA peroneal nerve in 19992.7 mV (1)2.9 mV (1)1.7 mV (1)
  • Data are means ± 1 SD.

  • *

    * P < 0.05;

  • P < 0.01.