From: Vitamin B12 deficiency in metformin-treated type-2 diabetes patients, prevalence and association with peripheral neuropathy
Independent variable
Odds ratio (95 % CIs)
P value
Total daily dose of metformin (gram)
1.96 (0.99 to 3.88)
0.053
HbA1c (mmol/mol)
0.97 (0.95 to 0.99)
0.003
Race (if black)
0.34 (0.13 to 0.92)
0.033