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Table 2 Patient characteristics

From: Predicting the survival of patients with bone metastases treated with radiation therapy: a validation study of the Katagiri scoring system

Variable Subgroups Entire cohort Validation cohort for the Katagiri’s scoring system
No. of Patients % No. of Patients %
Gender Men 372 60.4 225 63.2
Women 244 39.6 131 36.8
Age ≤ 64 332 53.9 174 48.9
≥ 65 284 46.1 182 51.1
KPS 10–60 277 45 188 52.8
70–80 192 31 100 28.1
90–100 131 21 66 18.5
ECOG PS 0–2 377 61 201 56.5
3–4 226 37 155 43.5
Primary lesion Lung cancer 222 36 163 45.8
Breast cancer 65 11 15 4.2
Prostate cancer 35 6 16 4.5
Others 294 48 162 45.5
Primary characteristics Slow 114 19 44 12.4
Moderate 75 12 44 12.4
Rapid 427 69 268 75.3
Visceral metastases No 98 15.9 42 11.8
Nodular 403 65.4 248 69.7
Disseminated 96 15.6 66 18.5
Laboratory data Normal 35 5.7 32 9.0
Abnormal 244 39.6 232 65.2
Critical 93 15.1 92 25.8
Previous chemotherapy No 236 38.3 146 41.0
Yes 369 59.9 210 59.0
Multiple bone metastases No 169 27.4 86 24.2
Yes 437 70.9 270 75.8
Katagiri score 0–3    18 5.1
4–6    133 37.4
7–10    205 57.6