Table 1 Characteristics of the vagotomy and matched comparison cohorts
From: Vagotomy and the incidence of rheumatoid arthritis and osteoarthritis: a Danish register-based study
Truncal Vagotomy Cohort (n = 2260) | General Population Comparison Cohort (n = 22610) | Superselective Vagotomy Cohort (n = 3810) | General Population Comparison Cohort (n = 38090) | |
|---|---|---|---|---|
Age group, years, n* (%) | ||||
18–40 | 210 (9.0) | 2070 (9.2) | 920 (24.0) | 9170 (24.1) |
41–50 | 380 (17.0) | 3840 (17.0) | 1120 (29.3) | 11,170 (29.3) |
51–60 | 500 (22.0) | 5020 (22.2) | 990 (26.1) | 9940 (26.1) |
61–70 | 540 (23.8) | 5380 (23.8) | 610 (16.0) | 6110 (16.0) |
71+ | 630 (27.8) | 6300 (27.9) | 170 (4.5) | 1700 (4.5) |
Sex, n* (%) | ||||
Female | 940 (41.4) | 9420 (41.6) | 1250 (32.7) | 12,470 (32.7) |
Male | 1320 (58.2) | 13,190 (58.3) | 2560 (67.2) | 25,620 (67.2) |
Calendar year, n* (%) | ||||
1977–1981 | 500 (21.8) | 4960 (21.9) | 1540 (40.3) | 15,360 (40.3) |
1982–1986 | 660 (29.1) | 6600 (29.2) | 1270 (33.3) | 12,720 (33.4) |
1987–1991 | 760 (33.7) | 7640 (33.8) | 730 (19.2) | 7280 (19.1) |
1992–1995 | 340 (15.0) | 3410 (15.1) | 270 (7.2) | 2730 (7.2) |
Charlson comorbidity index score, n* (%) | ||||
0 | 1760 (77.5) | 20,260 (89.6) | 3570 (93.7) | 36,450 (95.7) |
1–2 | 410 (18.3) | 2080 (9.2) | 210 (5.6) | 1520 (4.0) |
≧ 3 | 90 (3.7) | 270 (1.2) | 30 (0.7) | 120 (0.3) |