Table 3.
Nutritional disorders in RYGB and OAGB cohorts
| Time | Total | Percentage of disorders | p value§ | ||
|---|---|---|---|---|---|
| RYGB | OAGB | ||||
| iPTH (> 50 pg/ml) | Preoperative | 29.2 (7/24) | 25.0 (2/8) | 31.3 (5/16) | 0.751 |
| 6/12 | 23.3 (7/30) | 27.3 (3/11) | 21.1 (4/19) | 0.698 | |
| 12/12 | 33.3 (9/27) | 25.0 (2/8) | 36.8 (7/19) | 0.551 | |
| 24/12 | 25.0 (5/20) | 0 (0/3) | 29.4 (5/17) | 0.278 | |
| Calcium (< 2.15 mmol/L) | Pre op | 0 (30) | 0 (12) | 0 (18) | - |
| 6/12 | 6.3 (2/32) | 9.1 (1/11) | 4.8 (1/ 21) | 0.631 | |
| 12/12 | 3.0 (1/33) | 0 (13) | 5 (1/20) | 0.413 | |
| 24/12 | 13.8 (4/29) | 0 (7) | 18.2 (4/22) | 0.224 | |
|
Corrected calcium (< 2.15 mmol/L) |
Preoperative | 0 (30) | 0 (12) | 0 (18) | - |
| 6/12 | 3.0 (1/33) | 0 (12) | 4.8 (21) | 0.443 | |
| 12/12 | 0 (33) | 0 (13) | 0 (20) | - | |
| 24/12 | 0 (26) | 0 (6) | 0 (20) | - | |
| Vitamin D (< 50 nmol/L) | Preoperative | 31.9 (15/47) | 40.0 (8/12) | 25.9 (7/27) | 0.306 |
| 6/12 | 21.4 (9/42) | 21.4 (3/14) | 21.4 (6/28) | 1.000 | |
| 12/12 | 30.6 (11/36) | 25.0 (3/12) | 33.3 (8/24) | 0.609 | |
| 24/12 | 25.9 (7/27) | 0 (6) | 33.3 (7/21) | - | |
| Iron (< 5 umol/L) | Preoperative | 11.8 (6/51) | 10 (2/20) | 12.9 (4/31) | 0.753 |
| 6/12 | 11.4 (5/44) | 17.6 (3/17) | 7.4 (2/27) | 0.297 | |
| 12/12 | 15.0 (6/40) | 18.8 (3/16) | 12.5 (3/24) | 0.588 | |
| 24/12 | 9.7 (3/31) | 11.1 (1/9) | 9.1 (2/22) | 0.863 | |
| Ferritin (< 15 ug/L) | Preoperative | 14.8 (8/54) | 15.0 (3/20) | 14.7 (5/34) | 0.977 |
| 6/12 | 11.6 (5/43) | 12.5 (2/16) | 11.1 (3/27) | 0.891 | |
| 12/12 | 22.5 (9/40) | 31.3 (5/16) | 16.7 (4/24) | 0.279 | |
| 24/12 | 30 (9/30) | 33.3 (3/9) | 28.6 (6/21) | 0.794 | |
| Hb (Male) (< 130 g/L) | Preoperative | 0 (15) | 0 (5) | 0 (10) | - |
| 6/12 | 0 (11) | 0 (5) | 0 (10) | - | |
| 12/12 | 16.7 (2/12) | 25.0 (1/4) | 12.5 (1/8) | 0.584 | |
| 24/12 | 12.5 (1/8) | 0 (1) | 14.3 (1/7) | 0.686 | |
| Hb (Female) (< 119 g/L) | Preoperative | 7.5 (3/40) | 13.3 (2/15) | 4.0 (1/25) | 0.278 |
| 6/12 | 15.6 (5/32) | 25.0 (3/12) | 10.0 (2/20) | 0.258 | |
| 12/12 | 10.0 (3/30) | 15.4 (2/13) | 5.9 (1/17) | 0.390 | |
| 24/12 | 4.8 (1/21) | 14.3 (1/7) | 0 (14) | 0.147 | |
| B12 (< 350 pg/ml) | Preoperative | 32.6 (15/46) | 25.7 (4/15) | 35.5 (11/31) | 0.550 |
| 6/12 | 20 (7/35) | 20.0 (2/10) | 20.0 (5/25) | 1.000 | |
| 12/12 | 40 (12/30) | 55.6 (5/9) | 33.3 (7/21) | 0.255 | |
| 24/12 | 42.9 (12/28) | 37.5 (3/8) | 45.0 (9/20) | 0.793 | |
| Active B12(< 35 pmol/L) | Preoperative | 11.8 (4/34) | 7.7 (1/13) | 14.3 (3/21) | 0.562 |
| 6/12 | 0 (33) | 0 (14) | 0 (19) | - | |
| 12/12 | 14.3 (4/28) | 11.1 (1/9) | 15.8 (3/19) | 0.741 | |
| 24/12 | 15.0 (3/20) | 0 (6) | 21.0 (3/14) | 0.147 | |
| Folate (< 7 nmol/L) | Preoperative | 4.4 (2/45) | 0 (19) | 7.7 (2/26) | 0.216 |
| 6/12 | 0 (43) | 0 (16) | 0 (27) | - | |
| 12/12 | 2.6 (1/38) | 0 (12) | 3.8 (1/26) | 0.491 | |
| 24/12 | 0 (24) | 0 (5) | 0 (19) | - | |
| Hcy (14 umol/L) | Preoperative | 8.6 (3/35) | 6.3 (1/16) | 10.5 (2/19) | 0.653 |
| 6/12 | 9.1 (3/33) | 0 (11) | 13.6 (3/22) | 0.199 | |
| 12/12 | 14.8 (4/27) | 12.5 (1/8) | 15.8 (3/19) | 0.826 | |
| 24/12 | 5 (1/20) | 0 (4) | 6.3 (1/16) | 0.608 | |
| Albumin (< 37 g/L) | Preoperative | 0 (56) | 0 (22) | 0 (34) | - |
| 6/12 | 0 (45) | 0 (15) | 0 (13) | - | |
| 12/12 | 4.5 (2/44) | 5.9 (1/17) | 3.7 (1/27) | 0.736 | |
| 24/12 | 2.9 (1/34) | 0 (10) | 4.2 (1/24) | 0.512 | |
| Total protein (< 68g/L) | Preoperative | 12.5 (7/56) | 18.2 (4/22) | 8.8 (3/34) | 0.301 |
| 6/12 | 27.3 (12/44) | 40.0 (6/15) | 20.7 (6/29) | 0.173 | |
| 12/12 | 22.7 (10/44) | 25.0 (4/16) | 21.4 (6/28) | 0.786 | |
| 24/12 | 11.4 (4/35) | 9.1 (1/11) | 12.5 (3/24) | 0.769 | |
| CRP (> 10 mg/L) | Preoperative | 32.0 (15/46) | 15.8 (3/19) | 44.7 (12/27) | 0.041 |
| 6/12 | 19.4 (7/36) | 18.2 (2/11) | 20.0 (5/25) | 0.899 | |
| 12/12 | 6.9 (2/29) | 0 (9) | 10.0 (2/20) | 0.326 | |
| 24/12 | 0 (21) | 0 (4) | 0 (17) | - | |
RYGB Roux-en-Y gastric bypass, OAGB one anastomosis gastric bypass, iPTH parathyroid, Hb haemoglobin, Hcy homocystein, CRP C reactive protein
§Pearson Chi-square; *p < 0.05