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Table 1 Baseline characteristics of patients before 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 + boostWBRT AloneSRS AloneP Value
(n = 79)(n = 140)(n = 44)
Age, No. (%)   0.563
 < 60366717 
 ≥60437327 
Sex, No. (%)   0.819
 Male5510332 
 Female243712 
KPS, No. (%)   0.931
 ≤80478425 
 > 80325619 
Number of BMs, No. (%)   < 0.001
 1–3513439 
 > 3281065 
Maximum size of BM, No. (%)   0.170
 < 20 mm368126 
20 mm435918 
Extracranial metastases, No. (%)   0.009
 Yes17536 
 None14206 
 Unknown486732 
Symptoms of BM, No. (%)   0.123
 Yes376914 
 None427130 
Systematic treatment   0.833
 CTx559929 
 No-CTx244115 
  1. Abbreviations: WBRT+boost whole brain radiotherapy plus focal radiation boost, WBRT whole brain radiation therapy, SRS stereotactic radiosurgery, KPS Karnofsky Performance Status, BM brain metastasis, CTx chemotherapy, No-CTx no chemotherapy