Table 3.
Stratified Association between Vitamin B12 Supplement Use and Serum Vitamin B12
| B12 Supplement Category | p-trend | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
|
||||||||||
| None | MVMM | MVMM exclusive | ||||||||
| N (Wgt %) | Ratioa | 95% CI | N (Wgt %) | Ratioa | 95% CI | N (Wgt %) | Ratioa | 95% CI | ||
|
| ||||||||||
| Gender | ||||||||||
| Male | 4372 (71.3) | 1.00 | Ref | 1344 (24.9) | 1.22 | (1.19, 1.26) | 229 (3.8) | 1.51 | (1.44, 1.58) | < 0.001 |
| Female | 3932 (64.5) | 1.00 | Ref | 1592 (30.0) | 1.30 | (1.25, 1.35) | 288 (5.5) | 1.69 | (1.55, 1.85) | < 0.001 |
| p-interaction < 0.001 | ||||||||||
| Smoking Status | ||||||||||
| Never | 4594 (66.3) | 1.00 | Ref | 1715 (28.8) | 1.25 | (1.21, 1.29) | 283 (4.8) | 1.66 | (1.54, 1.78) | < 0.001 |
| Former | 1814 (61.2) | 1.00 | Ref | 815 (32.9) | 1.30 | (1.23, 1.36) | 157 (5.9) | 1.55 | (1.42, 1.69) | < 0.001 |
| Current | 1896 (78.2) | 1.00 | Ref | 406 (18.7) | 1.25 | (1.17, 1.34) | 77 (3.1) | 1.53 | (1.37, 1.72) | < 0.001 |
| p-interaction = 0.45 | ||||||||||
a
Adjusted for sex, age, race, poverty to income ratio, education, body mass index, smoking status, alcohol use, current health status, diabetes status, heart disease status, anemia treatment, memory loss