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Table 2 Regression results for the association between exposure to abdominal adiposity, air pollution, and thyroid related traits

From: Effects of the abdominal fat distribution on the relationship between exposure to air pollutants and thyroid hormones among Korean adult males

 

TSH (μIU/mL)

FT4 (ng/dL)

Crude Model

Adjusted Modela

Crude Model

Adjusted Modela

β (SE)

p

β (SE)

p

β (SE)

p

β (SE)

p

Adiposity trait

 WC (cm)

0.0013 (0.0009)

0.1762

0.0014 (0.0009)

0.1368

− 0.0021 (0.0005)

< 0.0001

− 0.0022 (0.0005)

< 0.0001

 VAT (cm2)

0.0055 (0.0128)

0.6691

0.0159 (0.0131)

0.2241

− 0.0226 (0.0062)

0.0003

− 0.0208 (0.0063)

0.0010

 SAT (cm2)

0.0177 (0.0135)

0.1884

0.0107 (0.0136)

0.4325

− 0.0141 (0.0065)

0.0301

− 0.0186 (0.0066)

0.0047

VSR

− 0.0093 (0.0089)

0.2931

− 0.0027 (0.0090)

0.7651

− 0.0038 (0.0043)

0.3737

− 0.0021 (0.0043)

0.6378

Air pollution

 PM10 (μg/m3)

0.0216 (0.0093)

0.0205

0.0256 (0.0096)

0.0077

− 0.0058 (0.0045)

0.2009

− 0.0056 (0.0047)

0.2288

  NO2 (ppb)

0.0203 (0.0080)

0.0114

0.0190 (0.0081)

0.0196

− 0.0084 (0.0039)

0.0293

− 0.0097 (0.0040)

0.0147

  SO2 (ppb)

− 0.0003 (0.0084)

0.9701

− 0.0013 (0.0084)

0.8762

− 0.0001 (0.0041)

0.9753

− 0.0003 (0.0041)

0.9443

  CO (ppm)

0.0259 (0.0106)

0.0150

0.0266 (0.0107)

0.0129

− 0.0080 (0.0051)

0.1218

− 0.0090 (0.0052)

0.0830

  1. TSH, Thyroid Stimulating Hormone; FT4, Free Thyroxine; WC, waist circumference; VAT, visceral adipose tissue; SAT, subcutaneous adipose tissue; VSR, visceral-to-subcutaneous fat ratio; PM10, particulate matter ≤ 10 μm in diameter; NO2, nitrogen dioxide; SO2, sulfur dioxide; CO, carbon monoxide; SE, standard error
  2. TSH and FT4 levels were transformed to square root and natural logarithms, respectively
  3. The beta coefficient and standard error in adiposity measures including VAT and SAT was converted by scale to the 100 cm2 area
  4. The beta coefficient and 95% confidence interval in each air pollutant was scaled to the interquartile range for each pollutant, respectively (9.1 μg/m3 for PM10, 13.8 ppb for NO2, 1.5 ppb for SO2, and 0.2 ppm for CO)
  5. aThe result was adjusted for site of recruitment, age, smoking status (never- or ex- vs. current-smokers), alcohol consumption (never- or ex- vs. current-drinkers), and physical activity (yes vs. no)