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Multivariable logistic regression: Predictors for cause of iron deficiency in patients without gastrointestinal symptoms
| Variable | P value | Regression coefficients (SE) | Adjusted odds ratio | 95% Confidence Interval |
| Age (Years) | 0.01 | 0.04 (0.01) | 1.04 | 1.01 – 1.08 |
| Fecal Occult Blood Positive | 0.01 | 2.0 (0.85) | 7.8 | 1.46 – 41.8 |
| MCV ≤ 60(fl) | < 0.001 | 2.7 (0.71) | 14.8 | 3.65 – 60.7 |
