Table 1 Comparison of cohorts pre- and post-universal screening
|  | 2013–2015 (pre-universal screening group) | 2015–2017 (universal screening group) | P-value |
|---|---|---|---|
Number | 420 | 514 | Â |
Age, mean (SD) | 71.1 (9.26) | 71.7 (9.51) | 0.3324 |
Gender (M:F) | 200:220 | 239:275 | 0.9805 |
Side (right:left) | 195:225 | 271:243 | 0.0484 |
THA:TKA | 220:200 | 296:218 | 0.9151 |
BMI, mean (SD) | 30.12 (5.60) | 29.56 (5.67) | 0.1317 |
Haemoglobin (pre-op), mean (SD) | 134.97gm/dl (12.33) | 138.33gm/dl (12.91) | 0.0001 |
Iron deficiency anaemia | 105 (25%) | 180 (35%) | 0.7829 |
Iron infusion rate | 21 (5%) | 71 (13.8%) | <0.0001 |
Blood transfusion rate | 20 (4.8%) | 15 (2.9%) | 0.0886 |