Table 3 Characteristics of the study population
Hip/knee arthroplasties | Cataract surgery | |
|---|---|---|
Number of patients | 944 | 1,674 |
Average age in years (SD) | 69.3 (8.9) | 72.9 (8.9) |
Sex (women) (%) | 72.8 | 58.1 |
Bilateral affectation (%) | 18.8 | 56.7 |
Affected joints (%) | ||
Hip (left/right) | 27.7/30.6 | - |
Knee (left/right) | 66.8/68.4 | - |
Presence of ocular comorbidity (%)1 | - | 14.9 |
Previous arthroplasty or cataract surgery (%) | 25.5 | 25.8 |
Operated joints (%) | ||
Hip | 28.2 | - |
Knee | 71.5 | - |
General comorbidities(%) | ||
Arthrosis or rheumatism | 98.3 | 67.4 |
Asthma or chronic bronchitis | 13.1 | 19.5 |
Cancer or other malign tumour | 4.0 | 5.5 |
Diabetes | 15.0 | 22.3 |
Embolism or paralysis | 5.8 | 6.8 |
Hip or femur fracture | 2.9 | 2.8 |
Hypertension | 54.2 | 51.5 |
Heart problems | 16.3 | 20.9 |
Depression or nervous problems | 31.5 | 24.3 |
Deafness | 26.1 | 36.1 |
Circulatory disorders | 46.6 | 41.9 |
Prostate disorders2 | 33.5 | 31.7 |
Womb/ovary disorders2 | 16.6 | 14.7 |
Varicose veins | 41.7 | 32.3 |
Occupational status (%) | ||
Retired | 35.7 | 49.2 |
Housewife | 50.0 | 41.9 |
Other3 | 14.3 | 8.9 |
Educational level (%) | ||
Unable to read and write | 5.2 | 5.2 |
Primary school or below | 82.3 | 84.8 |
Secondary school certificate, upper primary, or professional training | 8.2 | 5.5 |
Higher secondary studies or university degree | 4.3 | 4.4 |