Table 5. Factors associated with perceived indication and necessity of vitamin B12.

OR: Odds ratio; CI: Confidence interval.

Variable	Indication of vitamin B12		Necessity of vitamin B12
	Adjusted OR (95% CI)	p-value	Adjusted OR (95% CI)	p-value
Age (years)
Less than 39	6.26 (1.86–21.06)	0.003	3.71 (1.26–10.89)	0.017
40–59	1.40 (0.49–0.98)	0.521	1.03 (0.42–2.51)	0.938
More than 59	1		1
Gender
Male	0.41 (0.19–0.90)	0.026	1.28 (0.63–2.57)	0.489
Female	1		1
DM duration
Less than 5 years	4.80 (1.72-13.36)	0.003	1.86 (0.79–4.36)	0.152
5-10 years	3.20 (1.04-9.85)	0.042	1.36 (0.50–3.65)	0.538
More than 10 years	1		1
Marital status
Single	1.88 (0.68–5.16)	0.217	1.77 (0.66–4.72)	0.254
Ever married	1
Do you take vitamin B12?
Yes	0.56 (0.26–1.18)	0.132	0.22 (0.11–0.45)	<0.001
No	1		1