Table 1.

Baseline characteristics of patients

	Single fraction (N = 65)		Multiple fraction (N = 97)		All patients (N = 162)
	N	%	n	%	N	%
Age
< 65	41	63	72	74.2	113	69.8
≥65	24	37	25	25.8	49	30.2
Mean	58.9		54.9		56.6
Median	60.0		55.0		57
Sex
Male	20	30.8	34	35	54	33.3
Female	45	69.2	63	65	108	66.7
ECOG
1	37	57	57	58.8	94	58
2	22	33.8	36	37.1	58	35.8
3	6	9.2	4	4.1	10	6.2
Comorbidities
Yes	17	26.2	20	20.6	37	22.8
No	48	73.8	77	79.4	125	77.2
Primary tumor
Breast	33	50.8	51	52.6	84	51.9
Lung	16	24.6	15	15.5	31	19.1
Prostate	7	10.8	12	12.4	19	11.7
Others	9	13.8	19	19.5	28	17.3
Extent of bone metastases
Single	6	9.2	3	3.1	9	5.6
Multiple	59	90.8	94	96.9	153	94.4
Visceral metastases
Yes	31	47.7	42	43.3	73	45.1
No	34	52.3	55	56.7	89	54.9
Baseline pain scorea
2	1	1.5	2	2.1	3	1.9
3	36	55.4	52	53.6	88	54.3
4	28	43.1	43	44.3	71	43.8
Baseline analgesic scoreb
2	13	20	16	16.5	29	17.9
3	29	44.6	47	48.5	76	46.9
4	23	35.4	34	35	57	35.2
Treatment site
Spine	29	44.6	62	63.9	91	56.2
Pelvis	25	38.5	30	30.9	55	34.0
Extremities	5	7.7	2	2.1	7	4.3
Others	4	6.2	5	5.2	9	5.5
Systemic therapy
Yes	52	80	79	81.4	131	80.9
No	13	20	18	18.6	31	19.1
Fractionation schedule
10 Gy in 1#	‐	‐	‐	‐	5	3.1
8 Gy in 1#	‐	‐	‐	‐	60	37
30 Gy in 10#	‐	‐	‐	‐	5	3.1
20 Gy in 5#	‐	‐	‐	‐	92	56.8

^aThere were no patients with pain score 1.

^bThere were no patients with analgesic score 0‐1.