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Table 1 Patient Characteristics

From: Pre-radiotherapy FDG PET predicts radiation pneumonitis in lung cancer

Parameter Total (%) SymptomaticaN (%) p-value
No of patients 100 (100) 59 (59)  
Gender    0.65
Male/Female 60(60)/40(40) 35(58.3)/26(65)
Age    0.011
Symptomatic (IQR)   59.5-73 yrs
Asymptomatic (IQR) 54-66 yrs
Stage b    0.36
I 6 (6) 1 (16.7)
II 5 (5) 4 (80)
III 78 (78) 48 (61.5)
IV 11 (11) 6 (54.5)
Tumor location b    0.97
LLL 15 (15) 10 (66.7)
LUL 25 (25) 15 (60)
RLL 9 (9) 6 (66.7)
RML 6 (6) 4 (66.7)
RUL 45 (45) 24 (53.3)
Tumor histology b    0.66
Adenocarcinoma 57 (57) 30 (52.6)
Neuroendocrine 1 (1) 1 (100)
Non-small 18 (18) 13 (72.2)
Squamous 24 (24) 15 (62.5)
Treatment type b    0.89
IMRT 64 (64) 35 (54.7)
Proton 13 (13) 9 (69.2)
3D Conformal 23 (23) 15 (65.2)
Chemotherapy status    0.66
Concurrent 86 (86) 52 (60.5)
RT alone 14 (14) 7 (50)
Smoking history b    0.92
Currently 28 (28) 15 (53.6)
Former 66 (66) 40 (60.6)
Never 6 (6) 4 (66.7)
Interval between staging PET/CT and start of RT 0.65
Median (range) in days 18 (3–69) 15 (3–69)
  1. aSymptomatic status: CTCAEv4 RP grade ≥ 2.
  2. bYates’ continuity correction applied.
  3. IQR: Inter-quartile range.
  4. Note: Hypothesis testing for association used the Mann–Whitney U test for continuous predictors; Pearson’s chi-squared test for marginal homogeneity for categorical predictors.