Logistic regression analysis of predictors of normal serum calcium and serum vitamin B12 status among the study subjects
| Variables | Serum calcium | Vitamin B12 | |||
| OR | 95% CI of OR | OR | 95% CI of OR | ||
| Milk consumption | No | 1 | 1 | ||
| Yes | 3.27 | 1.67 to 6.39 | 2.95 | 1.80 to 4.85 | |
| Gender | Male | 1 | 1 | ||
| Female | 0.79 | 0.42 to 1.45 | 0.99 | 0.61 to 1.60 | |
| Ethnicity | Non-tribal | 1 | 1 | ||
| Tribal | 1.21 | 0.64 to 2.27 | 0.54 | 0.32 to 0.91 | |
| Birth order | First | 1 | 1 | ||
| Second | 1.32 | 0.58 to 2.98 | 1.13 | 0.60 to 1.64 | |
| Third | 1.01 | 0.47 to 2.18 | 0.81 | 0.45 to 1.41 | |