Nerve function in 1982, 1990, and 1999 for tertiles of HbA1c
| HbA1c tertiles | HbA1c ≤ 7.8% (n = 13) | HbA1c 7.9%–8.3% (n = 11) | HbA1c ≥ 8.4% (n = 15) |
|---|---|---|---|
| Sensory sural NCV in 1982 | 51 m/s (4) | 49 m/s (5) | 47 m/s (7) |
| Sensory sural NCV in 1990 | 45 m/s (5) | 43 m/s (5) | 39 m/s (7) |
| Sensory sural NCV in 1999 | 44 m/s (10) | 44 m/s (11) | 34 m/s (15)† |
| Number of patients with undetectable sural NCV in 1999 | 1 | 1 | 5 |
| Sensory sural NAPA in 1982 | 7.7 μV (5) | 8.3 μV (3) | 7.5 μV (3) |
| Sensory sural NAPA in 1990 | 8.3 μV (4) | 6.7 μV (2) | 5.9 μV (4) |
| Sensory sural NAPA in 1999 | 9.8 μV (9) | 4.8 μV (4)* | 3.4 μV (4)† |
| Motor tibial NCV in 1982 | 48 m/s (5) | 46 m/s (5) | 47 m/s (7) |
| Motor tibial NCV in 1990 | 42 m/s (3) | 43 m/s (4) | 38 m/s (5) |
| Motor tibial NCV in 1999 | 43 m/s (6)* | 43 m/s (4) | 31 m/s (11)† |
| Number of patients with undetectable tibial NCV in 1999 | 0 | 0 | 4 |
| Tibial NAPA in 1999 | 4.9 mV (3) | 4.9 mV (2) | 2.6 mV |
| Motor peroneal NCV in 1982 | 44 m/s (4) | 46 m/s (4) | 41 m/s (4) |
| Motor peroneal NCV in 1990 | 42 m/s (2) | 44 m/s (4) | 38 m/s (5) |
| Motor peroneal NCV in 1999 | 41 m/s (4) | 42 m/s (4) | 35 m/s (8)* |
| Number of patients with undetectable peroneal NCV in 1999 | 0 | 0 | 1 |
| NAPA peroneal nerve in 1999 | 2.7 mV (1) | 2.9 mV (1) | 1.7 mV (1) |