Odds ratios and significance levels for the associations between clinical characteristics and the outcomes of (a) gastrointestinal malignancy, and (b) any gastrointestinal diagnosis, in 720 subjects with iron deficiency anaemia, Poole Hospital 2004–2012
| Variable | Percent (n) with GI malignancy | OR (p value) | Percent (n) with any GI diagnosis | OR (p value) |
|---|---|---|---|---|
| Sex | ||||
| Female | 5.1 (22) | RC | 24.7 (107) | RC |
| Male | 16.0 (46) | 3.6 (<0.001) | 39.0 (112) | 2.0 (<0.001) |
| Age/years | ||||
| ≤70 | 4.2 (12) | RC | 24.8 (71) | RC |
| >70 | 12.9 (56) | 3.4 (<0.001) | 34.1 (148) | 1.6 (0.008) |
| Haemoglobin/g/L | (<0.001) | (0.090) | ||
| Q1 : ≥111.5 | 5.2 (9) | RC | 28.2 (49) | RC |
| Q2 : 102.5–111.4 | 5.6 (10) | 1.1 (0.863) | 27.4 (49) | 1.0 (0.869) |
| Q3 : 91.5–102.4 | 9.1 (16) | 1.8 (0.160) | 27.8 (49) | 1.0 (0.947) |
| Q4 : ≤91.4 | 17.3 (33) | 3.8 (0.001) | 37.7 (72) | 1.5 (0.054) |
| Mean red cell volume/fl | (0.114) | (0.126) | ||
| Q1 : >84.3 | 6.8 (12) | RC | 26.6 (47) | RC |
| Q2 : 77.8–84.3 | 9.3 (17) | 1.4 (0.383) | 33.3 (61) | 1.4 (0.161) |
| Q3 : 72.5–77.8 | 7.6 (13) | 1.1 (0.755) | 25.9 (44) | 1.0 (0.887) |
| Q4 : <72.5 | 13.7 (26) | 2.2 (0.033) | 35.3 (67) | 1.5 (0.072) |
| Iron deficiency – severe | ||||
| No | 8.5 (18) | RC | 29.7 (63) | RC |
| Yes | 8.7 (38) | 1.0 (0.924) | 28.7 (125) | 1.0 (0.783) |
GI, gastrointestinal; RC, reference category; p values are based on logistic regression, with each variable added individually; Q—quartile.