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Table 1 Characteristics of stage I patients with ENPG and IMRT

From: Minimally invasive surgery alone compared with intensity-modulated radiotherapy for primary stage I nasopharyngeal carcinoma

Variable ENPG IMRT P
n (%) n (%)
Gender 0.466*
 Female 3 (30.0) 72 (21.9)  
 Male 7 (70.0) 257 (78.1)  
Age [median + SD (range)] 47.0 ± 14.5 (29–73) 45.0 ± 10.9 (19–75) 0.480#
BMI [mean + SD (range)] 24.4 ± 2.7 (18.8–27.9) 23.2 ± 3.0 (15.6–33.4) 0.129#
Karnofsky performance status 0.215*
 ≥ 90 9 (90.0) 322 (97.9)  
 < 90 1 (10.0) 7 (2.1)  
Clinical stage
 I 10 (100.0) 329 (100.0)  
 II 0 0  
 III 0 0  
 IV 0 0  
Histology 0.306*
 WHO I 0 0  
 WHO II 1 (10.0) 11 (3.3)  
 WHO III 9 (90.0) 318 (96.7)  
Smoking history 0.461*
 Yes 1 (10.0) 84 (25.5)  
 No 9 (90.0) 245 (74.5)  
Total doses [mean + SD (range)] 68.85 ± 1.24 (66.00–70.29)
Fractionated dose [mean + SD (range)] 2.24 ± 0.08 (2.00–2.36)
Reconstruction  
 Yes 6 (60.0)  
 No 4 (40.0)  
  1. ENPG endoscopic nasopharyngectomy, IMRT intensity-modulated radiotherapy, SD standard deviation
  2. * Fisher’s exact test
  3. #Mann–Whitney U test