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Table 1 Characteristics of Thyroid Cancer Patients Before Thyroidectomy

From: Thyroid cancer overdiagnosis and overtreatment: a cross- sectional study at a thyroid cancer referral center in Ecuador

Variablea Total (n = 452) n (%)
Sex
 Female 426 94.2
 Males 26 5.8
Age at diagnosis (mean: 44.6, SD: 14.56)
 < 20 years old 17 3.8
 20–34 years old 106 23.5
 35–44 years old 104 23
 45–54 years old 128 28.3
 55–64 years old 53 11.7
 65–74 years old 26 5.8
 75–84 years old 16 3.5
 > 84 years old 2 0.4
Residence
 Coast 49 10.8
 Highland 389 86.1
 Amazon 14 3.1
 Galapagos 0 0
Employment
 Domestic chores 332 73.5
 Student 20 4.4
 Labor 100 22.1
Education level
 None 22 4.9
 Elementary School 267 59.1
 High school 132 29.2
 College 31 6.9
Family history of thyroid cancer
 Yes 62 13.7
 No 390 86.3
BMI (n = 298) (mean: 28.75, SD: 5.53)
 Normal 76 25.5
 Overweight 113 37.9
 Obesity 109 36.6
Self-reported exposure to (n = 63)
 Radiation 4 6.3
 Chemicals in agriculture 59 93.7
Cigarette Smoking (n = 393)
 Yes 17 4.3
 No 376 95.7
Thyroid function
 Euthyroid 372 82.3
 Hypothyroidism 72 15.9
 Hyperthyroidism 8 1.8
Methods of detection
 Non-incidental (palpable nodule) 207 45.8
 Incidental 245 54.2
- Ultrasound 229 93.5
- Histology 13 5.3
- Unrelated test 3 1.2
Setting of thyroid surgery (n = 450)
 Tertiary Hospital 270 60
 Non- tertiary hospital 180 40
Size of tumor (n = 406) (median = 2 cm [IQ 1.2, 3.1])
 ≤ 1 cm 89 21.9
 > 1 cm 317 78.1
Focality (n = 416)
 Unifocal 230 55.3
 Multifocal 186 44.7
Cervical Lymph nodes metastasis (n = 436)
 Si 211 48.4
 No 225 51.6
MACIS score (n = 408) (median = 4.95 cm [IQ 4.15, 5.95])
 ≤ 6 311 76.2
 > 6 97 23.8
Histopathology, (n = 447)
 Papillary 417 93.3
 Follicular 12 2.7
 Hurtle cells 7 1.5
 Poor differentiated 3 0.7
 Anaplastic 1 0.2
 Medullary 7 1.6
Risk recurrence (n = 437)
 Very low risk 79 18.1
 Low risk 271 62.0
 Indeterminate risk 49 11.2
 High risk 38 8.7
  1. aAll variables without a specific number of patients were calculated from the whole population (n = 452). All the others show the number of people from which the variables were available