Table 1.
Intervention group, patient characteristics (N = 746) at 2 timepoints: on decision for operation and 1 week prior to it. Difference between the 2 timepoints is calculated between means when presented, otherwise between proportions (shown in parentheses) and is presented with 95% confidence interval. Values are count (%) unless otherwise specified
| Patient characteristics of intervention group | On decision for operation | Missing | 1 week prior to operation | Missing | Difference [CI] |
|---|---|---|---|---|---|
| Days waiting a | 355 (223) | 0 (0) | |||
| Age a | 67.9 (9.7) | 0 (0) | |||
| Female sex | 414 (55) | 0 (0) | |||
| BMI a | 31.4 (5.8) | 31.0 (5.4) | –0.4 [–0.6 to –0.3] | ||
| < 18.5 | 1 (0.1) | 1 (0.1) | 0.0 [–0.5 to 0.5] | ||
| 18.5–24.9 | 94 (13) | 102 (14) | 1.1 [–0.3 to 2.5] | ||
| 25–29.9 | 228 (31) | 231 (31) | 0.4 [–1.8 to 2.6] | ||
| 30–34.9 | 236 (32) | 241 (32) | 0.7 [–1.8 to 3.1] | ||
| 35–39.9 | 124 (17) | 126 (17) | 0.3 [–2.0 to 2.5] | ||
| 40–44.9 | 46 (6.2) | 39 (5.2) | –0.9 [–2.5 to 0.6] | ||
| 45–49.9 | 15 (2.0) | 6 (0.8) | –1.2 [–2.4 to –0.3] | ||
| ≥ 50 | 2 (0.3) | 0 (0) | |||
| Nutritionist consultation b | |||||
| BMI ≥ 40 | 63 (8.4) | 45 (6.0) | –2.4 [–3.9 to –1.0] | ||
| Hemoglobin, g/L a | 141.4 (12.8) | 1 (0.1) | 140.9 (12.6) | –0.6 [–1.2 to 0.1] | |
| Anemia | 55 (7.4) | 1 (0.1) | 44 (5.9) | 0 (0) | –1.5 [–3.4 to 0.4] |
| Mild | 46 (6.2) | 38 (5.1) | –1.1 [–3.1 to 0.9] | ||
| Moderate | 9 (1.2) | 6 (0.8) | –0.4 [–1.5 to 0.6] | ||
| Severe | 0 (0) | 0 (0) | 0.0 [–0.5 to 0.5] | ||
| Creatinine, µmol/L a | 82.7 (41.6) | 2 (0.3) | 83.9 (47.7) | 1.1 [0.1 to 2.2] | |
| Glucose, mmol/L a | 6.0 (1.3) | 2 (0.3) | 6.4 (1.5) | 1 (0.1) | 0.3 [0.2 to 0.4] |
| HbA1c, mmol/mol a | 38.2 (7.6) | 3 (0.4) | 37.8 (7.3) | 7 (0.9) | –0.4 [–0.7 to –0.1] |
| HbA1c for non-DM patients | 2 (0.3) | 7 (1.1) | |||
| 42–47 mmol/mol | 46 (6.2) | 49 (6.6) | 0.5 [–1.7 to 2.7] | ||
| > 47 mmol/mol | 6 (0.8) | 8 (1.1) | 0.3 [–0.7 to 1.4] | ||
| Albumin, g/L a | 45.0 (2.7) | 3 (0.4) | 43.4 (2.7) | 10 (1.3) | –1.6 [–1.8 to –1.4] |
| Albumin < 35 g/L | 1 (0.1) | 3 (0.4) | 1 (0.1) | 10 (1.3) | 0.0 [–0.6 to 0.6] |
| Lymphocytes < 1.5x10⁹/L | 106 (14) | 1 (0.1) | 79 (11) | 1 (0) | –3.6 [–6.3 to–1.0] |
| Vitamin D, nmol/L a | 84.7 (34.5) | 5 (0.7) | |||
| Nutritionist consultation b | |||||
| Vitamin D < 50 on | |||||
| decision, nmol/L a | 36.2 (9.3) | 70.9 (28) | 34.7 [28.6 to 41.5] |
a
Values are mean (SD)
b
Individuals who had BMI ≥ 40 and those with vitamin D < 50 nmol/L on decision for operation received a nutritionist consultation on decision for operation. The change in number of patients with BMI ≥ 40 is shown at the 2 different timepoints and the change in mean vitamin D for the group that had < 50 nmol/L on decision for operation.