Table 2– Overall disease-specific and disease-free survival for patients stratified for differing radiological tumour characteristics
Overall survivalDisease-specific survivalDisease-free survival
CasesEventsSurvival monthsLog-rank test p-valueCasesEventsSurvival monthsLog-rank test p-valueCasesEventsSurvival monthsLog-rank test p-value
Sphericity
 Spherical1304468.67±4.580.0201302682.44±4.260.0301305153.55±3.600.399
 Nonspherical442352.42±6.94441859.58±7.44441850.34±7.68
Margins
 Nonsmooth1224765.20±4.640.9341222979.05±4.500.5961224456.67±4.130.246
 Any smooth522060.41±5.72521566.91±5.78522548.45±6.04
 Nonspiculated552258.46±5.750.658551567.93±5.840.598552452.31±6.340.407
 Any spiculated1194566.57±4.541192978.60±4.441194554.85±4.05
 Nonlobulated762767.50±5.890.618762173.44±6.100.581762560.83±4.960.108
 Any lobulated984062.29±4.79982377.26±4.69984450.14±4.60
 Nonconcave1094164.29±5.010.8101092776.21±5.010.8231093756.62±4.710.223
 Any concave652661.32±5.01651770.86±4.95653250.22±5.30
Predominant margin
 Mixed21847.37±4.710.43121651.06±4.510.50021541.50±4.410.063
 Smooth251152.63±6.6325956.66±6.75251344.98±7.08
 Spiculated772573.94±5.30771684.30±4.95772658.97±4.94
 Lobulated512353.38±5.88511366.80±6.43512545.60±6.37
 Concave000000
Attenuation
 GGO200.660200.508200.087
 Semi-solid632364.41±6.20631377.11±6.35631863.38±6.34
 Solid1094464.56±4.761093175.85±4.541095147.73±3.87
GGO % semi–solid
 0–2527956.91±5.890.97227467.89±4.890.88327949.00±5.800.880
 26–5018764.65±10.3718478.02±10.4918559.75±11.18
 51–7511459.23±11.2211365.03±10.8611365.90±12.36
 76–1007340.08±9.737247.12±8.777152.22±9.64
Cavitation
 No cavitation732666.32±6.090.457731976.89±5.670.545733743.49±4.210.129
 Air bronchogram873563.10±5.03872176.03±5.13873060.26±5.07
 Cavitation12650.09±12.0012459.36±12.4812275.58±10.47
  • Data are presented as n or mean±se, unless otherwise stated. p-values were calculated by the log-rank test. GGO: ground-glass opacity.