ORs with 95% CI and p values for parsimonious logistic regression model of clinical variables associated with gastrointestinal malignancy, in 720 subjects with iron deficiency anaemia, Poole Hospital 2004–2012
| Variable | Number of subjects | OR (95% CI) | p Value |
|---|---|---|---|
| Sex | |||
| Female | 433 | RC | |
| Male | 287 | 4.0 (2.3 to 7.0) | <0.001 |
| Age/years | |||
| ≤70 | 286 | RC | |
| >70 | 434 | 3.3 (1.7 to 6.4) | <0.001 |
| Haemoglobin/g/L | <0.001 | ||
| Q1 : ≥111.5 | 174 | RC | |
| Q2 : 102.5—111.4 | 179 | 1.6 (0.6 to 4.3) | 0.307 |
| Q3 : 91.5—102.4 | 176 | 2.5 (1.1 to 6.1) | 0.037 |
| Q4 : ≤91.4 | 191 | 5.3 (2.4 to 11.7) | <0.001 |
Q, quartile; p values based on logistic regression, adjusting for the three variables; RC, reference category.