Table 3.

Linear regression: factors related to low levels of vitamin B12.

	Model A			Model B
	Coefficient	95% CI	P value	Coefficient	95% CI	P value
Metformin dose	−0.06	−0.10, −0.028	0.001	−0.061	−0.09, −0.024	0.001
Gender (female)	49.1	2.3–95.8	0.040	54.7	9.0–100.4	0.019
Diabetic neuropathy	−116.9	−165.8, −68.0	0.000	−110.8	−162.0, −59.7	0.000
Age	−0.86	−2.7, 1.0	0.362	–	–	–
Time from diagnosis	−5.2	−16.8, 6.3	0.374	–	–	–
Time on metformin	0.63	−0.36, 1.64	0.210	–	–	–