Table 1 Baseline characteristics for our study population between 2016 and 2019.
Variable | All inhabitants (n = 13,795,549) | Lumbar DDD patients (n = 119,148) | Surgical patients (n = 14,840) |
|---|---|---|---|
Age (years), mean (SD) | 49.5 (18.8) | 57.5 (15.6) | 58.1 (15.4) |
Sex, n (%) | |||
Male | 6,798,912 (49) | 54,686 (46) | 7565 (51) |
Female | 6,996,637 (51) | 64,462 (54) | 7275 (49) |
Comorbidities, n (%) | |||
0 | 116,99,719 (85) | 83,156 (70) | 10,386 (70) |
1 | 838,777 (6) | 14,339 (12) | 1725 (12) |
2 | 787,544 (6) | 11,725 (10) | 1453 (10) |
≥ 3 | 469,509 (3) | 8936 (8) | 1286 (9) |
Level of education, n (%) | |||
Low | 3,587,100 (26) | 40,986 (34) | 5007 (34) |
Middle | 5,295,067 (38) | 44,289 (37) | 5633 (38) |
High | 4,913,382 (36) | 33,873 (28) | 4200 (28) |
Household income, median (IQR) | 27,182 (19,406–36,279) | 25,938 (19,197–34,552) | 27,786 (25,893–36,471) |
Occupation, n (%) | |||
Employee | 6,423,232 (47) | 43,710 (37) | 5700 (38) |
Employer or entrepreneur | 1,209,288 (9) | 8280 (7) | 920 (6) |
Retired | 3,183,242 (23) | 42,160 (35) | 5553 (37) |
Unemployed | 1,866,463 (14) | 23,639 (20) | 2518 (17) |
Student | 1,113,324 (8) | 1359 (1) | 149 (1) |
Migration background, n (%) | |||
Yes | 2,103,826 (15) | 17,566 (15) | 1427 (10) |
No | 11,691,723 (85) | 101,582 (85) | 13,431 (90) |
