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Table 2 Patient demographics and pathologic features after propensity-score matching

From: Prognosis of papillary thyroid cancer in patients with Graves’ disease: a propensity score-matched analysis

Characteristics PTC with GD (n = 114) PTC without GD (n = 570) p value
Age (years) 46.3 ± 12.9 46.3 ± 12.1 0.960
Female sex 99 (86.8%) 486 (85.3%) 0.662
Body mass index (kg/m2) 23.8 ± 3.1 23.5 ± 3.1 0.422
Preoperative FNA results    0.142
 Benign 0 (0.0%) 9 (1.6%)  
 Atypia 7 (6.1%) 26 (4.6%)  
 Follicular neoplasm 0 (0.0%) 22 (3.9%)  
 Suspicious malignancy 30 (26.3%) 139 (24.4%)  
 Malignancy 77 (67.5%) 374 (65.6%)  
Pathologic features
 Tumor size (cm) 0.8 ± 0.5 0.7 ± 0.4 0.386
 Extrathyroidal extension    0.959
  No 59 (51.8%) 290 (50.9%)  
  Microscopic 51 (44.7%) 257 (45.1%)  
  Gross 4 (3.5%) 23 (4.0%)  
 Lymphatic invasion 2 (1.8%) 10 (1.8%) 1.000
 Vascular invasion 0 (0.0%) 0 (0.0%) NA
 Margin involvement 1 (0.9%) 5 (0.9%) 1.000
 LN metastasis    0.648
  N0 80 (70.2%) 412 (72.3%)  
  N1a 34 (29.8%) 158 (27.7%)  
  N1b 0 (0.0%) 0 (0.0%)  
131I remnant ablation 43 (37.7%) 236 (41.4%) 0.465
131I dose (mCi) 47.2 ± 32.8 43.9 ± 42.6 0.636
Follow-up (months) 96.8 ± 29.5 94.0 ± 31.2 0.894
Recurrence    0.557
 Regional recurrence 1 (0.9%) 6 (1.6%)  
 Distant metastasis 0 (0.0%) 0 (0.0%)  
  1. Data presented as mean and standard deviation if not noted otherwise. Categorical data were compared using the chi-squared test. Data derived from continuous variables of different groups were compared by Student’s t test
  2. PTC papillary thyroid carcinoma, GD Graves’ disease, FNA fine needle aspiration, LN lymph node, NA not applicable