I recently crunched 4 months worth of meter readings beginning one month
before the onset of my neuropathy.

You may remember my posting that Dr. Irl Hirsch, M.D., a Type I and the
director of the University of Washington Diabetes Care Center
recommended that diabetics aim for a standard deviation of one-third of
their avarage blood sugar or lower.  http://diabetesmonitor.com/m57.htm

Here's what I found using Accu-Chek's Compass software: (they sent it to
me for free when I phoned them to inquire about it).

Four months worth of readings beginning one month before my neuropathy
symptoms onset elicited the following data:

657 tests
4.7 tests per day
Average reading 98.2
Standard Deviation 18.3
Ratio of SD to Average:  18.6% (well below the recommended <33%)

Time since diagnosis: 9.7 years
Typical A1c over that time:  5.3---which included an unexpected and
suspicious 4.5 before onset.
Current BMI: 22.9
Average BMI last 3 years 24.5
BMI at diagnosis: 31.3
Retinas and kidneys test as healthy.

Conclusions?
YMMV
Our vulnerability to complications varies and likely increases over time.
No calculation using only 5 tests per day can give a true picture of
blood glucose fluctuations over 4 months or particularly 10 years.
Fluctuations are thought to increase oxidative stress and damage leading
to complications.

Medical recommendations using any numbers have to be judged in light of
all of the above and more perhaps.

Neuropathy affects 50% of diabetics--it's the most common complication.