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Table 3 Results of stratified analyses by adiposity traits for the association between exposure to air pollution and thyroid stimulating hormone

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

Abdominal adiposity

Exposure

TSH (μIU/mL)

Normal adiposity

High adiposity

Crude Model

Adjusted Modela

Crude Model

Adjusted Modela

β (SE)

p

β (SE)

p

β (SE)

p

β (SE)

p

WC (cm)

Sample n

WC < 90 cm (n = 1016)

WC ≥ 90 cm (n = 1424)

PM10 (μg/m3)

0.0088 (0.0139)

0.5279

0.0202 (0.0145)

0.1636

0.0323 (0.0125)

0.0098

0.0301 (0.0128)

0.0193

NO2 (ppb)

0.0116 (0.0123)

0.3474

0.0139 (0.0125)

0.2665

0.0275 (0.0105)

0.0093

0.0229 (0.0107)

0.0323

SO2 (ppb)

0.0045 (0.0128)

0.7247

0.0028 (0.0128)

0.8271

− 0.0027 (0.0112)

0.8118

− 0.0004 (0.0111)

0.9736

CO (ppm)

0.0057 (0.0165)

0.7317

0.0076 (0.0166)

0.6482

0.0403 (0.0139)

0.0038

0.0391 (0.0139)

0.0051

VAT (cm2)

Sample n

VAT < 100 cm2 (n = 678)

VAT ≥ 100 cm2 (n = 1762)

PM10 (μg/m3)

0.0369 (0.0180)

0.0405

0.0286 (0.0182)

0.1168

0.0158 (0.0109)

0.1466

0.0242 (0.0113)

0.0322

NO2 (ppb)

0.0348 (0.0148)

0.0190

0.02467 (0.0148)

0.0961

0.0141 (0.0095)

0.1398

0.0165 (0.0097)

0.0903

SO2 (ppb)

− 0.0050 (0.0160)

0.7575

− 0.0019 (0.0157)

0.9018

0.0015 (0.0099)

0.8820

− 0.0001 (0.0099)

0.9905

CO (ppm)

0.0537 (0.0203)

0.0084

0.0520 (0.0201)

0.0099

0.0151 (0.0125)

0.2262

0.0172 (0.0126)

0.1731

SAT (cm2)

Sample n

SAT < 100 cm2 (n = 543)

SAT ≥ 100 cm2 (n = 1897)

PM10 (μg/m3)

0.0374 (0.0207)

0.0719

0.0264 (0.0210)

0.2087

0.0174 (0.0104)

0.0953

0.0244 (0.0108)

0.0239

NO2 (ppb)

0.0390 (0.0171)

0.0226

0.0296 (0.0169)

0.0804

0.0148 (0.0091)

0.1024

0.0161 (0.0093)

0.0834

SO2 (ppb)

− 0.0016 (0.0167)

0.9239

0.0048 (0.0163)

0.7702

0.0004 (0.0098)

0.9676

− 0.0014 (0.0098)

0.8834

CO (ppm)

0.0530 (0.0223)

0.0180

0.0509 (0.0219)

0.0203

0.0177 (0.0121)

0.1437

0.0196 (0.0122)

0.1085

VSR

Sample n

VSR < 1.0 (n = 1379)

VSR ≥ 1.0 (n = 1061)

PM10 (μg/m3)

0.0211 (0.0123)

0.0857

0.0230 (0.0127)

0.0698

0.0221 (0.0142)

0.1205

0.0302 (0.0147)

0.0407

NO2 (ppb)

0.0156 (0.0108)

0.1464

0.0132 (0.0110)

0.2276

0.0259 (0.0120)

0.0313

0.0253 (0.0122)

0.0390

SO2 (ppb)

− 0.0093 (0.0115)

0.4196

− 0.0100 (0.0116)

0.3859

0.0097 (0.0123)

0.4347

0.0067 (0.0122)

0.5870

CO (ppm)

0.0211 (0.0142)

0.1390

0.0210 (0.0143)

0.1416

0.0320 (0.0161)

0.0462

0.0315 (0.0161)

0.0509

  1. TSH, Thyroid Stimulating Hormone; 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 level was transformed to square root
  3. 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)
  4. 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)
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European Journal of Medical Research

ISSN: 2047-783X

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