Table 3 Univariate and multivariate linear regression of factors associated with change in haemoglobin (Δ Hb mg/L) following intravenous iron infusion prior to elective colorectal surgery for cancer (n = 47)

− 7.7 (− 17.3 to 1.9)

0.112

–

–

4.7 (− 1.6 to 10.9)

0.140

–

–

2.0 (− 5.6 to 9.7)

0.594

–

–

8.2 (2.2–14.2)

0.008

–

0.780

1.8 (− 4.9 to 8.6)

0.590

–

–

0.02 (0.01–0.03)

0.003

0.01 (0.0–0.2)

0.034

0.5 (0.3–0.7)

< 0.001

0.4 (0.2–0.6)

< 0.001

− 0.8 (− 1.1 to − 0.6)

< 0.001

− 0.5 (− 0.7 to − 0.2)

0.002

− 6.9 (− 11.50 to − 2.19)

0.005

− 4.7 (− 7.9 to − 1.47)

0.006