Table 2: Categorized variables for the training and validation cohort showing no statistical differences in distribution between the two cohorts in CHI2 test for all variables. Due to a high percentage of missing values for ischemic heart disease and diabetes in the validation cohort statistical analysis between the cohorts where not performed.

- - Training cohort Validation cohort -
Variable - No. Missing (%) No. Missing (%) Chi2 test
Fracture - - - - - -
- Yes 104 0 94 0 0.819
- No 36 - 36 - -
Cancer group - - - - - -
- Slow 99 0 79 0 0.225
- Moderate 10 - 13 - -
- Fast 31 - 38 - -
Visceral metastases - - - - - -
- Yes 47 0 58 8 0.083
- No 93 - 64 - -
Skeletal metastases - - - - - -
- Solitary 53 0 38 0 0.228
- Multiple 87 - 92 - -
ASA group - - - - - -
- 1 + 2 63 7 74 2 0.147
- 3 + 4 70 - 54 - -
Karnofsky score - - - - - -
- >= 70 96 0 73 3 0.095
- < 70 44 - 53 - -
Ischemic heart disease - - - - - -
- Yes 6 0 0 128 N/A
- No 134 - 2 - -
Diabetes - - - - - -
- Yes 19 0 0 - -
- No 121 - 2 128 N/A

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