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. 2023 Jan 10;25(2):80. doi: 10.3892/ol.2023.13666

Table III.

Recurrence analysis of 404 patients with pulmonary carcinoid tumors using univariate and multivariate Cox models.

Atypical carcinoid (n=97) Typical carcinoid (n=307)


Univariate Multivariate Univariate Multivariate




Factors HR (95% CI) P-value HR (95% CI) P-value HR (95% CI) P-value HR (95% CI) P-value
Age 1.01 0.173 1.02 0.292
(0.98-1.03) (0.98-1.05)
Sex 0.842 0.002 0.010
  Female - - -
  Male 0.93 4.19 3.72
(0.46-1.88) (1.59-11.03) (1.33-10.42)
BMIa 0.116 0.090 0.163
  Underweight/normal - - -
  Overweight/ 0.56 0.45 0.47
  obese (0.28-1.10) (0.17-1.16) (0.17-1.30)
T stage 0.422 0.661 0.414 0.663
  T1 - - - -
  T2-4 1.30 0.83 1.47 1.26
(0.68-2.46) (0.37-1.89) (0.58-3.74) (0.45-3.53)
N stage <0.001 0.018 0.065 0.167
  N0 - - - -
  N1-3 3.61 2.62 2.42 2.14
(1.86-7.01) (1.16-5.95) (0.92-6.36) (0.76-5.99)
M stage 0.049 0.275 <0.001 <0.001
  M0 - - - -
  M1 2.51 1.91 31.22 14.93
(0.97-6.46) (0.63-5.85) (10.95-88.99) (4.77-46.77)
Tumor side 0.726 0.583
  Left 1.12 14.93
(0.59-2.14) (0.52-3.16)
  Right - -
Tumor lobe 0.198 0.618
  Upper 0.51 0.74
(0.24-1.07) (0.26-2.13)
  Middle/main 0.78 0.55
  bronchus (0.33-1.84) (0.15-1.98)
  Lower - -
Smoking status 0.809 0.369
  Never smoker - -
  Former smoker 1.07 1.95
(0.53-2.20) (0.72-5.23)
  Current smoker 1.34 1.90
(0.56-3.21) (0.49-7.34)
Family history of lung cancer 0.459 0.780
  No - -
  Yes 0.59 1.23
(0.14-2.44) (0.28-5.33)
Family history of other cancer 0.631 0.934
  No - -
  Yes 1.18 1.04
(0.60-2.31) (0.41-2.65)
Surgery type 0.030 0.355 0.295
  Pneumo/bi- 2.42 1.88 1.46
  lobectomy (1.15-5.12) (0.80-4.41) (0.33-6.37)
  Lobectomy/sleeve - - -
  Sub-lobectomy 0.77 0.83 0.37
(0.29-2.03) (0.28-2.49) (0.08-1.60)
N2 Lymphadenectomy 0.039 0.041 0.002 0.138
  Inadequate 1.95 2.13 2.13 2.12
(1.02-3.73) (1.04-4.39) (1.54-9.98) (0.78-5.79)
  Adequate - - - -
Comorbidity 0.485 0.807
  No 1.40 0.78
(0.54-3.58) (0.10-5.83)
  Yes - -
a

15 missing BMI were not analyzed using the Cox model. CI, confidence interval; HR, hazard ratio.