Development and validation of two nomograms for predicting overall survival and Cancer-specific survival in prostate cancer patients with bone metastases: a population-based study

Li, Baochao; Xing, Jiajun; Wang, Zhongyuan; Gong, Zixuan; Wang, Zengjun; Xu, Aiming

doi:10.1186/s12894-023-01372-w

Table 1 Demographic and clinical characteristics of patients with PABM in OS group

From: Development and validation of two nomograms for predicting overall survival and Cancer-specific survival in prostate cancer patients with bone metastases: a population-based study

Characteristics	All samples		Training		Validation		P
Characteristics	N	Percentage (%)	N	Percentage (%)	N		Percentage (%)
Age
< 70	1516	56.50%	1064	56.60%	452	56.20%	0.846
> 70	1167	43.50%	815	43.40%	352	43.80%	0.846
Race
White	2075	77.30%	1453	77.30%	622	77.40%	0.997
Black	461	17.20%	324	17.20%	137	17%
Asian/Pacific Islander	130	4.80%	90	4.80%	40	5%
American Indian/Alaska Native	17	0.60%	12	0.60%	5	0.60%
Marital status
Married	1730	64.50%	1216	64.70%	514	63.90%	0.697
other	953	35.50%	663	35.30%	290	36.10%	0.697
Year of diagnosis
2010–2014	1293	48.20%	895	47.60%	398	49.50%	0.374
2015–2018	1390	51.80%	984	52.40%	406	50.50%	0.374
T stage
T1	943	35.10%	676	36.00%	267	33.20%	0.295
T2	968	36.10%	682	36.30%	286	35.60%
T3	447	16.70%	301	16.00%	146	18.20%
T4	325	12.10%	220	11.70%	105	13.10%
N stage
N0	1827	68.10%	1259	67.00%	568	70.60%	0.064
N1	856	31.90%	620	33.00%	236	29.40%	0.064
PSA
< 4	73	2.70%	52	2.80%	21	2.60%	0.582
4–10	328	12.20%	240	12.80%	88	10.90%
10–20	395	14.70%	272	14.50%	123	15.30%
> 20	1887	70.30%	1315	70.00%	572	71.10%
Gleason score
< =6	57	2.10%	37	2.00%	20	2.50%	0.9
7 (3 + 4)	163	6.10%	114	6.10%	49	6.10%
7 (4 + 3)	256	9.50%	178	9.50%	78	9.70%
8	651	24.30%	452	24.10%	199	24.80%
9	1556	58.00%	1098	58.40%	458	57.00%
Chemotherapy
Yes	443	16.50%	322	17.10%	121	15.00%	0.182
No/Unknown	2240	83.50%	1557	82.90%	683	85.00%	0.182
Radiation
Yes	2621	97.70%	1836	97.70%	785	97.60%	0.906
No	62	2.30%	43	2.30%	19	2.40%	0.906
Surgery
Local	248	9.20%	188	10.00%	60	7.50%	0.105
No	2368	88.30%	1646	87.60%	722	89.80%
Prostatectomy	67	2.50%	45	2.40%	22	2.70%
lung
Yes	150	5.60%	103	5.50%	47	5.80%	0.707
No	2533	94.40%	1776	94.50%	757	94.20%	0.707
liver
Yes	80	3.00%	59	3.10%	21	2.60%	0.461
No	2603	97.00%	1820	96.90%	783	97.40%	0.461
brain
Yes	27	1.00%	21	1.10%	6	0.70%	0.377
No	2656	99.00%	1858	98.90%	798	99.30%	0.377
Vital status
Dead	1341	50.00%	949	50.50%	392	48.80%	0.406
Alive	1342	50.00%	930	49.50%	412	51.20%	0.406

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ISSN: 1471-2490

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