Table 3 Total numbers and frequencies of lowered Hb and Hct values pre- and postoperatively. Low Hb was defined as < 13.0 g/dl in men and 12.0 g/dl in women, low Hct as < 0.37 L/L in men and 0.35 L/L in women. p values were calculated using Pearson chi-squared test. Hb, haemoglobin; Hct, haematocrit

From: Intraoperative blood loss as indicated by haemoglobin trend is a predictor for the development of postoperative spinal implant infection—a matched-pair analysis