Table 1.
Characteristics of 941 IBD patients and 869 controls.
| Characteristics | IBD patients n. (%) | Controls n. (%) | p-value |
|---|---|---|---|
| Age (years) Median, IQR <40 40–59 ≥60 |
50 (39–60) 244 (25.9) 457 (48.6) 240 (25.5) |
54 (44–63) 162 (18.6) 412 (47.4) 295 (34.0) |
<0.0001 <0.0001 |
| Sex Male Female |
485 (51.5) 456 (48.5) |
394 (45.3) 475 (54.7) |
0.0084 |
| Educational level Primary education Lower secondary education Upper secondary education Post-secondary education Missing |
35 (3.7) 228 (24.2) 451 (47.9) 207 (22.0) 20 (2.1) |
36 (4.1) 189 (21.7) 386 (44.4) 229 (26.3) 29 (3.3) |
0.071 |
| Area of residence Milan Bergamo Monza Brianza Pavia Other Unknown |
544 (57.8) 40 (4.3) 63 (6.7) 98 (10.4) 184 (19.6) 12 (1.4) |
531 (61.1) 35 (4–0) 49 (5.6) 89 (10.2) 139 (16.0) 26 (3.0) |
0.047 |
| Type of occupation [[41], [42]] Managers Professionals Technicians and associate Office employers Services and sales workers Skilled agricultural / forestry workers Craft and related trades workers Plant and machine operators and assemblers Elementary occupations Armed forces Retired or unemployed Missing |
31 (3.3) 97 (10.3) 32 (3.4) 243 (25.8) 117 (12.4) 14 (1.5) 107 (11.4) 9 (1.0) 50 (5.31) 5 (0.5) 142 (15.1) 94 (10.0) |
40 (4.6) 115 (13.2) 38 (4.4) 221 (25.4) 103 (11.9) 8 (0.9) 60 (6.9) 6 (0.7) 43 (5.0) 7 (0.8) 133 (15.3) 95 (10.9) |
0.063 |
| Body mass index (kg/m2) <25 25–30 >30 |
581 (61.7) 260 (27.6) 100 (10.6) |
543 (62.5) 231 (26.6) 95 (10.9) |
0.88 |
| Smoking habit No smoker Past smoker Current smoker Missing |
580 (61.6) 161 (17.1) 185 (19.7) 15 (1.6) |
553 (63.6) 101 (11.6) 186 (21.4) 29 (3.3) |
0.001 |
| Physical activity [43] Less than three times per week Three times or more per week Missing |
603 (64.1) 244 (25.9) 94 (10.0) |
527 (60.64) 249 (28.7) 93 (10.7) |
0.32 |
| Social activity [43] Less than once per week Once or more per week Missing |
488 (51.9) 377 (40.1) 76 (8.1) |
437 (50.3) 353 (40.6) 79 (9.1) |
0.67 |
| Religious activity [43] Less than once per week Once or more per week Missing |
675 (71.7) 196 (20.8) 70 (7.4) |
584 (67.2) 204 (23.5) 81 (9.3) |
0.096 |
| Sharing home with one or more symptomatic family members (fever and other symptoms) | 151 (16.1) | 141 (16.1) | 0.97 |
IQR: interquartile range.