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Table 1 General characteristics of participants according to presence or not of dementia.

From: Subclinical hyperthyroidism and dementia: the Sao Paulo Ageing & Health Study (SPAH)

  Presence of dementia  
Characteristics Yes
(N = 49)
No
(N = 1070)
P
Age (years)* 78.5 (8.0) 71.9 (6.1) < 0.001
Proportion of women (%) 33 (67.3) 644 (60.2) 0.20
Race    
   White 13 (56.5) 530 (52.4) 0.81
   Mixed 6 (26.1) 328 (32.4)  
   Black 4 (17.4) 154 (15.2)  
Education (years)    
   No formal education 24 (50.0) 422 (39.6) 0.10
   ≥ 1 year of formal education 24 (50.0) 645 (60.4)  
Monthly income    
< 127 US$ 39 (79.6) 567 (53.0) < 0.001
≥ 127 US$ 10 (20.4) 503 (47.0)  
BMI (kg/m2)* 22.1 (4.3) 25.8 (5.0) < 0.001
TSH (mU/l)* 1.4 (0.9) 1.7 (0.9) 0.04
Free-T4 (ng/dl)* 1.2 (1.2) 1.1 (0.4) 0.052
TPOAb positive antibodies (UI/ml)* 17.3 (12.9) 26.1 (81.5) 0.63
high blood pressure (%) † 42 (91.3) 822 (78.4) 0.02
diabetes (%)‡ 12 (26.1) 21.9 (224) 0.31
Total cholesterol (mg/dl) 203 (42) 210 (44) 0.29
HDL-cholesterol (mg/dl) 59 (18) 56 (15) 0.13
LDL-cholesterol (mg/dl) 116 (32) 125 (35) 0.09
Current smokers (%) 6 (23.1) 153 (24.6) 0.54
History of alcohol abuse (%) 11 (22.4) 225 (21.0) 0.46
  1. *Mean (standard deviation).
  2. †Diagnosis of high blood pressure was done if positive medical history of high blood pressure or treatment for high blood pressure or systolic blood pressure > 140 mm Hg or diastolic blood pressure > 90 mm Hg.
  3. ‡Diagnosis of diabetes if positive medical history of diabetes or treatment for diabetes or fasting blood glucose > 126 mg/dl.