Table 1.
General characteristics of the study population
| Total group (n = 4614) |
MVS users (n = 4274) |
Non-users (n = 340) |
p-value | |
|---|---|---|---|---|
| Age (years) | 51.0 (43.0 – 57.0) | 51.0 (43.0 – 57.0) | 43.0 (33.0 – 53.0) | < 0.0011 |
| Gender (male) | 930 (20.2) | 871 (20.4) | 59 (17.4) | 0.1812 |
| Marital status | ||||
| - Single | 772 (16.7) | 694 (16.2) | 78 (22.9) | 0.0012 |
| - Living with partner | 606 (13.1) | 547 (12.8) | 59 (17.4) | |
| - Married or registered partnership | 2900 (62.9) | 2721 (63.7) | 179 (52.6) | |
| - Divorced or separated | 251 (5.4) | 233 (5.5) | 18 (5.3) | |
| - Widowed | 85 (1.8) | 79 (1.8) | 6 (1.8) | |
| Education level | ||||
| - Low | 1165 (25.2) | 1085 (25.4) | 80 (23.5) | 0.6242 |
| - Middle | 2062 (44.7) | 1902 (44.5) | 160 (47.1) | |
| - High | 1387 (30.1) | 1287 (30.1) | 100 (29.4) | |
| Body weight (kg) | 84.0 (73.6 – 97.0) | 84.0 (73.5 – 97.0) | 85.0 (74.1 – 98.8) | 0.2571 |
| BMI (kg/m2) | 28.7 (25.7 – 32.4) | 28.7 (25.7 – 32.4) | 28.7 (25.9 – 33.2) | 0.4721 |
| Type of surgery | ||||
| - Sleeve gastrectomy | 1490 (32.3) | 1305 (30.5) | 185 (54.4) | < 0.0012 |
| - Roux-en-Y gastric bypass | 2966 (64.3) | 2819 (66.0) | 147 (43.2) | |
| - One-anastomosis gastric bypass | 108 (2.3) | 105 (2.5) | 3 (0.9) | |
| - Other | 43 (0.9) | 39 (0.9) | 4 (1.2) | |
| - Unknown | 7 (0.2) | 6 (0.1) | 1 (0.3) | |
| Time since surgery | ||||
| - 0–1 years | 680 (14.7) | 658 (15.4) | 22 (6.5) | <0.0012 |
| - 1–2 years | 1071 (23.2) | 1024 (24.0) | 47 (13.8) | |
| - 2–3 years | 1096 (23.8) | 1011 (23.7) | 85 (25.0) | |
| - 3–4 years | 866 (18.8) | 771 (18.0) | 95 (27.9) | |
| - 4–5 years | 570 (12.4) | 521 (12.2) | 49 (14.4) | |
| - > 5 years | 331 (7.2) | 289 (6.8) | 42 (12.4) | |
Data are presented as median (Q1 – Q3) and frequencies (percentages)
BMI, body mass index; MVS, multivitamin supplementation
1Mann-Whitney U Test
2Pearson Chi-square test