Table 3.
Evolution of nutritional deficiencies among the study sample
| Parameter | Preop N (%) |
Postopa
N (%) |
P b | De novo N (%) |
|---|---|---|---|---|
| Hemoglobin | ||||
| Male | 13 (39.4) | 5 (15.2) | 0.02 | 1 (3.0) |
| Female | 13 (31.7) | 12 (29.3) | 0.99 | 4 (9.8) |
| Hematocrit | ||||
| Male | 0 (0) | 2 (5.9) | NA | 5 (5.9) |
| Female | 2 (4.9) | 4 (9.8) | 0.69 | 4 (9.8) |
| MCV (micro def.)d | ||||
| Male | 7 (20.6) | 2 (5.9) | 0.06 | 0 (0) |
| Female | 11 (27.5) | 8 (20) | 0.45 | 2 (5) |
| Iron | 5 (20.8) | 4 (16.7) | 0.99 | 1 (4.2) |
| Ferritin | 2 (33.3) | 2 (33.3) | 0.99 | 1 (16.7) |
| Total protein | 0 (0) | 3 (4.6) | NA | 3 (4.6) |
| Albumin | 21 (29.6) | 27 (38) | 0.29 | 14 (19.7) |
| Calcium | 2 (4.7) | 2 (4.7) | 0.99 | 1 (2.3) |
| Magnesium | 0 (0) | 0 (0) | NA | 0 (0) |
| Phosphate | 0 (0) | 0 (0) | NA | 0 (0) |
| Zinc | 0 (0) | 0 (0) | NA | 0 (0) |
| Copper | 0 (0) | 1 (16.7) | NA | 1 (16.7) |
| Vitamin D | 54 (96.4) | 50 (89.3) | 0.29 | 2 (3.6) |
| Vitamin B12 | 3 (6.7) | 6 (15.3) | 0.38 | 4 (8.9) |
| Folic acid | 0 (0) | 0 (0) | NA | 0 (0) |
N number, NA not applicable, MCV mean cell volume
aMean follow-up = 24.2 ± 12.28 months
bMcNemar chi-squared test
cPercentage of participants with deficiency calculated as the number of participants (among those for whom sufficient data were available both preoperatively and postoperatively to determine whether the coexisting condition was present), divided by the number of participants (among those for whom sufficient data were available preoperatively and postoperatively)
dRepresenting microcytic deficiency (MCV < 83) in anemic patients only (i.e., patient with deficient hemoglobin levels)