Patient characteristics in a population-based cohort of 82 102 individuals with breast cancer diagnosed between 2008 and 2019
| . | No SSI n = 69 227 . | SSI n = 12 875 . | Overall n = 82 102 . |
|---|---|---|---|
| Age group (years) | |||
| <40 | 2513 (3.6) | 584 (4.5) | 3097 (3.8) |
| 40–49 | 10 321 (14.9) | 2130 (16.5) | 12 451 (15.2) |
| 50–64 | 24 084 (34.8) | 4733 (36.8) | 28 817 (35.1) |
| 65–74 | 21 761 (31.4) | 3464 (26.9) | 25 225 (30.7) |
| ≥75 | 10 548 (15.2) | 1964 (15.2) | 12 512 (15.2) |
| Country of birth | |||
| Sweden | 59 049 (85.3) | 10 778 (83.7) | 69 827 (85.1) |
| Europe (not Sweden) | 5489 (7.9) | 1134 (8.8) | 6623 (8.1) |
| Outside Europe | 2721 (3.9) | 583 (4.5) | 3304 (4.0) |
| Missing | 1968 (2.8) | 380 (3.0) | 2348 (2.9) |
| Highest level of education | |||
| ≤9 years | 14 942 (21.6) | 2817 (21.9) | 17 759 (21.6) |
| 10–13 years | 28 818 (41.6) | 5334 (41.4) | 34 152 (41.6) |
| >13 years | 24 737 (35.7) | 4554 (35.4) | 29 291 (35.7) |
| Missing | 730 (1.1) | 170 (1.3) | 900 (1.1) |
| Family income | |||
| Low | 16 963 (24.5) | 3435 (26.7) | 20 398 (24.8) |
| Middle | 34 538 (49.9) | 6389 (49.6) | 40 927 (49.9) |
| High | 17 509 (25.3) | 3017 (23.4) | 20 526 (25.0) |
| Missing | 217 (0.3) | 34 (0.3) | 251 (0.3) |
| Menstrual status | |||
| Premenopausal | 14 103 (20.4) | 2963 (23.0) | 17 066 (20.8) |
| Postmenopausal | 49 808 (72.0) | 8843 (68.7) | 58 651 (71.4) |
| Male | 395 (0.6) | 118 (0.9) | 513 (0.6) |
| Missing | 4921 (7.1) | 951 (7.4) | 5872 (7.2) |
| Hypertension | |||
| No | 55 139 (79.7) | 9788 (76.0) | 64 927 (79.1) |
| Yes | 14 088 (20.4) | 3087 (24.0) | 17 175 (20.9) |
| Obesity | |||
| No | 66 176 (95.6) | 11 791 (91.6) | 77 967 (95.0) |
| Yes | 3051 (4.4) | 1084 (8.4) | 4135 (5.0) |
| Diabetes | |||
| No | 64 432 (93.1) | 11 581 (90.0) | 76 013 (92.6) |
| Yes | 4795 (6.9) | 1294 (10.1) | 6089 (7.4) |
| Autoimmune disease | |||
| No | 64 131 (92.6) | 11 704 (90.9) | 75 835 (92.4) |
| Yes | 5096 (7.4) | 1171 (9.1) | 6267 (7.6) |
| Immunodeficiency | |||
| No | 69 087 (99.8) | 12 842 (99.7) | 81 929 (99.8) |
| Yes | 140 (0.2) | 33 (0.3) | 173 (0.2) |
| Charlson Co-morbidity Index | |||
| 0 | 37 856 (54.7) | 6811 (52.9) | 44 667 (54.4) |
| 1 | 6350 (9.2) | 1382 (10.7) | 7732 (9.4) |
| 2 | 9535 (13.8) | 1949 (15.1) | 11 484 (14.0) |
| 3–5 | 3333 (4.8) | 816 (6.3) | 4149 (5.1) |
| 6–7 | 250 (0.4) | 87 (0.7) | 337 (0.4) |
| ≥8 | 323 (0.5) | 103 (0.8) | 426 (0.5) |
| Missing | 11 580 (16.7) | 1727 (13.4) | 13 307 (16.2) |
| . | No SSI n = 69 227 . | SSI n = 12 875 . | Overall n = 82 102 . |
|---|---|---|---|
| Age group (years) | |||
| <40 | 2513 (3.6) | 584 (4.5) | 3097 (3.8) |
| 40–49 | 10 321 (14.9) | 2130 (16.5) | 12 451 (15.2) |
| 50–64 | 24 084 (34.8) | 4733 (36.8) | 28 817 (35.1) |
| 65–74 | 21 761 (31.4) | 3464 (26.9) | 25 225 (30.7) |
| ≥75 | 10 548 (15.2) | 1964 (15.2) | 12 512 (15.2) |
| Country of birth | |||
| Sweden | 59 049 (85.3) | 10 778 (83.7) | 69 827 (85.1) |
| Europe (not Sweden) | 5489 (7.9) | 1134 (8.8) | 6623 (8.1) |
| Outside Europe | 2721 (3.9) | 583 (4.5) | 3304 (4.0) |
| Missing | 1968 (2.8) | 380 (3.0) | 2348 (2.9) |
| Highest level of education | |||
| ≤9 years | 14 942 (21.6) | 2817 (21.9) | 17 759 (21.6) |
| 10–13 years | 28 818 (41.6) | 5334 (41.4) | 34 152 (41.6) |
| >13 years | 24 737 (35.7) | 4554 (35.4) | 29 291 (35.7) |
| Missing | 730 (1.1) | 170 (1.3) | 900 (1.1) |
| Family income | |||
| Low | 16 963 (24.5) | 3435 (26.7) | 20 398 (24.8) |
| Middle | 34 538 (49.9) | 6389 (49.6) | 40 927 (49.9) |
| High | 17 509 (25.3) | 3017 (23.4) | 20 526 (25.0) |
| Missing | 217 (0.3) | 34 (0.3) | 251 (0.3) |
| Menstrual status | |||
| Premenopausal | 14 103 (20.4) | 2963 (23.0) | 17 066 (20.8) |
| Postmenopausal | 49 808 (72.0) | 8843 (68.7) | 58 651 (71.4) |
| Male | 395 (0.6) | 118 (0.9) | 513 (0.6) |
| Missing | 4921 (7.1) | 951 (7.4) | 5872 (7.2) |
| Hypertension | |||
| No | 55 139 (79.7) | 9788 (76.0) | 64 927 (79.1) |
| Yes | 14 088 (20.4) | 3087 (24.0) | 17 175 (20.9) |
| Obesity | |||
| No | 66 176 (95.6) | 11 791 (91.6) | 77 967 (95.0) |
| Yes | 3051 (4.4) | 1084 (8.4) | 4135 (5.0) |
| Diabetes | |||
| No | 64 432 (93.1) | 11 581 (90.0) | 76 013 (92.6) |
| Yes | 4795 (6.9) | 1294 (10.1) | 6089 (7.4) |
| Autoimmune disease | |||
| No | 64 131 (92.6) | 11 704 (90.9) | 75 835 (92.4) |
| Yes | 5096 (7.4) | 1171 (9.1) | 6267 (7.6) |
| Immunodeficiency | |||
| No | 69 087 (99.8) | 12 842 (99.7) | 81 929 (99.8) |
| Yes | 140 (0.2) | 33 (0.3) | 173 (0.2) |
| Charlson Co-morbidity Index | |||
| 0 | 37 856 (54.7) | 6811 (52.9) | 44 667 (54.4) |
| 1 | 6350 (9.2) | 1382 (10.7) | 7732 (9.4) |
| 2 | 9535 (13.8) | 1949 (15.1) | 11 484 (14.0) |
| 3–5 | 3333 (4.8) | 816 (6.3) | 4149 (5.1) |
| 6–7 | 250 (0.4) | 87 (0.7) | 337 (0.4) |
| ≥8 | 323 (0.5) | 103 (0.8) | 426 (0.5) |
| Missing | 11 580 (16.7) | 1727 (13.4) | 13 307 (16.2) |
Values are n (%). SSI, surgical site infection.
Patient characteristics in a population-based cohort of 82 102 individuals with breast cancer diagnosed between 2008 and 2019
| . | No SSI n = 69 227 . | SSI n = 12 875 . | Overall n = 82 102 . |
|---|---|---|---|
| Age group (years) | |||
| <40 | 2513 (3.6) | 584 (4.5) | 3097 (3.8) |
| 40–49 | 10 321 (14.9) | 2130 (16.5) | 12 451 (15.2) |
| 50–64 | 24 084 (34.8) | 4733 (36.8) | 28 817 (35.1) |
| 65–74 | 21 761 (31.4) | 3464 (26.9) | 25 225 (30.7) |
| ≥75 | 10 548 (15.2) | 1964 (15.2) | 12 512 (15.2) |
| Country of birth | |||
| Sweden | 59 049 (85.3) | 10 778 (83.7) | 69 827 (85.1) |
| Europe (not Sweden) | 5489 (7.9) | 1134 (8.8) | 6623 (8.1) |
| Outside Europe | 2721 (3.9) | 583 (4.5) | 3304 (4.0) |
| Missing | 1968 (2.8) | 380 (3.0) | 2348 (2.9) |
| Highest level of education | |||
| ≤9 years | 14 942 (21.6) | 2817 (21.9) | 17 759 (21.6) |
| 10–13 years | 28 818 (41.6) | 5334 (41.4) | 34 152 (41.6) |
| >13 years | 24 737 (35.7) | 4554 (35.4) | 29 291 (35.7) |
| Missing | 730 (1.1) | 170 (1.3) | 900 (1.1) |
| Family income | |||
| Low | 16 963 (24.5) | 3435 (26.7) | 20 398 (24.8) |
| Middle | 34 538 (49.9) | 6389 (49.6) | 40 927 (49.9) |
| High | 17 509 (25.3) | 3017 (23.4) | 20 526 (25.0) |
| Missing | 217 (0.3) | 34 (0.3) | 251 (0.3) |
| Menstrual status | |||
| Premenopausal | 14 103 (20.4) | 2963 (23.0) | 17 066 (20.8) |
| Postmenopausal | 49 808 (72.0) | 8843 (68.7) | 58 651 (71.4) |
| Male | 395 (0.6) | 118 (0.9) | 513 (0.6) |
| Missing | 4921 (7.1) | 951 (7.4) | 5872 (7.2) |
| Hypertension | |||
| No | 55 139 (79.7) | 9788 (76.0) | 64 927 (79.1) |
| Yes | 14 088 (20.4) | 3087 (24.0) | 17 175 (20.9) |
| Obesity | |||
| No | 66 176 (95.6) | 11 791 (91.6) | 77 967 (95.0) |
| Yes | 3051 (4.4) | 1084 (8.4) | 4135 (5.0) |
| Diabetes | |||
| No | 64 432 (93.1) | 11 581 (90.0) | 76 013 (92.6) |
| Yes | 4795 (6.9) | 1294 (10.1) | 6089 (7.4) |
| Autoimmune disease | |||
| No | 64 131 (92.6) | 11 704 (90.9) | 75 835 (92.4) |
| Yes | 5096 (7.4) | 1171 (9.1) | 6267 (7.6) |
| Immunodeficiency | |||
| No | 69 087 (99.8) | 12 842 (99.7) | 81 929 (99.8) |
| Yes | 140 (0.2) | 33 (0.3) | 173 (0.2) |
| Charlson Co-morbidity Index | |||
| 0 | 37 856 (54.7) | 6811 (52.9) | 44 667 (54.4) |
| 1 | 6350 (9.2) | 1382 (10.7) | 7732 (9.4) |
| 2 | 9535 (13.8) | 1949 (15.1) | 11 484 (14.0) |
| 3–5 | 3333 (4.8) | 816 (6.3) | 4149 (5.1) |
| 6–7 | 250 (0.4) | 87 (0.7) | 337 (0.4) |
| ≥8 | 323 (0.5) | 103 (0.8) | 426 (0.5) |
| Missing | 11 580 (16.7) | 1727 (13.4) | 13 307 (16.2) |
| . | No SSI n = 69 227 . | SSI n = 12 875 . | Overall n = 82 102 . |
|---|---|---|---|
| Age group (years) | |||
| <40 | 2513 (3.6) | 584 (4.5) | 3097 (3.8) |
| 40–49 | 10 321 (14.9) | 2130 (16.5) | 12 451 (15.2) |
| 50–64 | 24 084 (34.8) | 4733 (36.8) | 28 817 (35.1) |
| 65–74 | 21 761 (31.4) | 3464 (26.9) | 25 225 (30.7) |
| ≥75 | 10 548 (15.2) | 1964 (15.2) | 12 512 (15.2) |
| Country of birth | |||
| Sweden | 59 049 (85.3) | 10 778 (83.7) | 69 827 (85.1) |
| Europe (not Sweden) | 5489 (7.9) | 1134 (8.8) | 6623 (8.1) |
| Outside Europe | 2721 (3.9) | 583 (4.5) | 3304 (4.0) |
| Missing | 1968 (2.8) | 380 (3.0) | 2348 (2.9) |
| Highest level of education | |||
| ≤9 years | 14 942 (21.6) | 2817 (21.9) | 17 759 (21.6) |
| 10–13 years | 28 818 (41.6) | 5334 (41.4) | 34 152 (41.6) |
| >13 years | 24 737 (35.7) | 4554 (35.4) | 29 291 (35.7) |
| Missing | 730 (1.1) | 170 (1.3) | 900 (1.1) |
| Family income | |||
| Low | 16 963 (24.5) | 3435 (26.7) | 20 398 (24.8) |
| Middle | 34 538 (49.9) | 6389 (49.6) | 40 927 (49.9) |
| High | 17 509 (25.3) | 3017 (23.4) | 20 526 (25.0) |
| Missing | 217 (0.3) | 34 (0.3) | 251 (0.3) |
| Menstrual status | |||
| Premenopausal | 14 103 (20.4) | 2963 (23.0) | 17 066 (20.8) |
| Postmenopausal | 49 808 (72.0) | 8843 (68.7) | 58 651 (71.4) |
| Male | 395 (0.6) | 118 (0.9) | 513 (0.6) |
| Missing | 4921 (7.1) | 951 (7.4) | 5872 (7.2) |
| Hypertension | |||
| No | 55 139 (79.7) | 9788 (76.0) | 64 927 (79.1) |
| Yes | 14 088 (20.4) | 3087 (24.0) | 17 175 (20.9) |
| Obesity | |||
| No | 66 176 (95.6) | 11 791 (91.6) | 77 967 (95.0) |
| Yes | 3051 (4.4) | 1084 (8.4) | 4135 (5.0) |
| Diabetes | |||
| No | 64 432 (93.1) | 11 581 (90.0) | 76 013 (92.6) |
| Yes | 4795 (6.9) | 1294 (10.1) | 6089 (7.4) |
| Autoimmune disease | |||
| No | 64 131 (92.6) | 11 704 (90.9) | 75 835 (92.4) |
| Yes | 5096 (7.4) | 1171 (9.1) | 6267 (7.6) |
| Immunodeficiency | |||
| No | 69 087 (99.8) | 12 842 (99.7) | 81 929 (99.8) |
| Yes | 140 (0.2) | 33 (0.3) | 173 (0.2) |
| Charlson Co-morbidity Index | |||
| 0 | 37 856 (54.7) | 6811 (52.9) | 44 667 (54.4) |
| 1 | 6350 (9.2) | 1382 (10.7) | 7732 (9.4) |
| 2 | 9535 (13.8) | 1949 (15.1) | 11 484 (14.0) |
| 3–5 | 3333 (4.8) | 816 (6.3) | 4149 (5.1) |
| 6–7 | 250 (0.4) | 87 (0.7) | 337 (0.4) |
| ≥8 | 323 (0.5) | 103 (0.8) | 426 (0.5) |
| Missing | 11 580 (16.7) | 1727 (13.4) | 13 307 (16.2) |
Values are n (%). SSI, surgical site infection.
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