Age at diagnosis (y): |
⩽35 | 32 | 23.7 | | 15 | 16.0 | | 31 | 29.0 | | 38 | 42.2 |
>35–40 | 23 | 17.0 | | 8 | 8.5 | | 14 | 13.1 | | 12 | 13.3 |
>40–45 | 21 | 15.6 | | 8 | 8.5 | | 9 | 8.4 | | 15 | 16.7 |
>45–50 | 26 | 19.3 | | 15 | 16.0 | | 19 | 17.8 | | 6 | 6.7 |
>50–55 | 17 | 12.6 | | 16 | 17.0 | | 22 | 20.6 | | 11 | 12.2 |
>55–60 | 9 | 6.7 | | 28 | 29.8 | | 10 | 9.3 | | 6 | 6.7 |
>60 | 7 | 5.2 | | 4 | 4.3 | | 2 | 1.9 | | 2 | 2.2 |
Mean age (y) | 45.5 | | 48.4 | | 43.1 | | 39.7 |
Educational level: |
Graduated from high school | 27 | 20.0 | | 20 | 21.3 | | 42 | 39.3 | | 41 | 45.6 |
Secondary school level | 36 | 26.7 | | 14 | 14.9 | | 30 | 28.0 | | 22 | 24.4 |
Elementary level, no graduation | 72 | 53.3 | | 58 | 61.7 | | 35 | 32.7 | | 26 | 28.9 |
Unknown | — | — | | 2 | 2.1 | | — | — | | 1 | 1.1 |
Region: |
Frankfurt, districts with ⩾35% blue collar workers | 7 | 5.2 | | 3 | 3.2 | | 4 | 3.7 | | 9 | 10.0 |
Frankfurt , districts with ⩾28–<35% blue collar workers | 22 | 16.3 | | 12 | 12.8 | | 22 | 20.6 | | 8 | 8.9 |
Frankfurt, districts with <28% blue collar workers | 15 | 11.1 | | 14 | 14.9 | | 14 | 13.1 | | 12 | 13.3 |
Hanau | 25 | 18.5 | | 17 | 18.1 | | 11 | 10.3 | | 21 | 23.3 |
Offenbach | 14 | 10.4 | | 25 | 26.6 | | 26 | 24.3 | | 2 | 2.2 |
Bad Homburg | 5 | 3.7 | | 3 | 3.2 | | 6 | 5.6 | | 4 | 4.4 |
Darmstadt | 28 | 20.7 | | 3 | 3.2 | | 6 | 5.6 | | 12 | 13.3 |
Offenbach county | 13 | 9.6 | | 12 | 12.8 | | 18 | 16.8 | | 14 | 15.6 |
Others | 5 | 3.7 | | 1 | 1.1 | | — | — | | 8 | 8.9 |
Unknown | 1 | 0.7 | | 4 | 4.3 | | — | — | | — | — |
Nationality: |
German | 105 | 77.8 | | 67 | 71.3 | | 84 | 78.5 | | 62 | 68.9 |
Other | 20 | 14.8 | | 6 | 6.4 | | 12 | 11.2 | | 22 | 24.4 |
Unknown | 10 | 7.4 | | 21 | 22.3 | | 11 | 10.3 | | 6 | 6.7 |
Diseases potentially affecting lumbar discs: |
None | 64 | 47.4 | | 40 | 42.6 | | 84 | 78.5 | | 70 | 77.8 |
Malposition of hip or pelvis, shortness of the leg, etc. | 16 | 11.9 | | 5 | 5.3 | | 5 | 4.7 | | 1 | 1.1 |
Scoliosis of lumbar spine | 40 | 29.6 | | 29 | 30.9 | | 12 | 11.2 | | 12 | 13.3 |
Malposition of hip or pelvis etc, and scoliosis | 10 | 7.4 | | 12 | 12.8 | | 2 | 1.9 | | 2 | 2.2 |
Unknown | 5 | 3.7 | | 8 | 8.5 | | 4 | 3.7 | | 5 | 5.6 |