Table 3. Risk factors for sub-optimal serum vitamin B-12 among adult HIV-infected ART naïve participants who did not report using vitamin B-12 containing supplements at two urban HIV clinics in Uganda, in April 2010.

Predictor variable	Unadjusted OR	95% CI	P-value	Adjusted OR	95% CI	P-value
Age	1.0	0.9–1.04	0.9	0.9a	0.8–1.0	0.09
Female	1.1	0.5–2.5	0.70	0.6a	0.2–2.1	0.47
Irritable Mood	2.6	1.1–6.4	0.03	3.2 a	1.1–9.3	0.04
WHO Stage III & IV	1.9	0.4–2.5	0.90	1.9a	0.6–6.2	0.30
Occupation (Employed)	1.9	0.7–4.5	0.20	1.9a	0.6–6.1	0.27
Current CD4	1.0	0.9–1.0	0.80	1.0a	0.9–1.0	0.90
BMI	1.1	1.0–1.2	0.01	1.1 a	1.0–1.3	0.01
Known duration with HIV	1.2	1.0–1.5	0.02	1.0 a	1.0–1.1	0.02
Anemia	0.6	0.2–2.5	0.50	0.6a	0.1–2.6	0.40
MCV	1.1	1.0–1.1	0.02	1.1 a	1.0–1.2	0.02
Rate of CD4 decline	1.0	0.9–1.0	0.82	1.0b	0.9–1.0	0.46

^aAdjusted for age, sex, BMI, supplement use, MCV, occupation, irritable mood, known duration with HIV, WHO disease stage and current CD4.

^bAdjusted for,age, sex, BMI, WHO stage, supplement use.

BMI- Body Mass Index, MCV-Mean Corpuscular Volume, OR Odds Ratio, WHO-World health Organization.