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Table 3 Baseline characteristics of patients between WBRT+boost and SRS alone after propensity score matching

From: Whole brain radiation therapy plus focal boost may be a suitable strategy for brain metastases in SCLC patients: a multi-center study

 WBRT + boostSRS AloneP-Value
(n = 37)(n = 37)
Age, No. (%)  1.00
 < 601414 
 ≥602323 
Sex, No. (%)  0.407
 Male2730 
 Female107 
KPS, No. (%)  0.815
 ≤802021 
 > 801716 
Number of BMs, No. (%)  0.744
 1–33132 
 > 365 
Maximum size of BM, No. (%)  0.642
 < 20 mm1820 
20 mm1917 
Extracranial metastases, No. (%)  0.317
 Yes26 
 None66 
 Unknown2925 
Symptoms of BM, No. (%)  0.809
 Yes1413 
 None2324 
Systematic treatment  0.802
 CTx2625 
 No-CTx1112 
  1. Abbreviations: WBRT+boost whole brain radiotherapy plus focal radiation boost, SRS stereotactic radiosurgery, KPS Karnofsky Performance Status, BM brain metastasis, CTx chemotherapy, No-CTx no chemotherapy