Mediation effects of thyroid function in the associations between phthalate exposure and lipid metabolism in adults

Table 1 Demographic characteristics of the study population (N = 222)

Variables	Adults (≧18 years, N = 222)
	Mean ± SD
Age (years)	222	52.2 ± 17.5
BMI	222	24.8 ± 4.57
	N	%
Sex
Female	117	52.7
Male	105	47.3
Region
Northern Taiwan	64	28.8
Central Taiwan	34	15.3
Southern Taiwan	62	27.9
Eastern Taiwan	39	17.6
Remote islands	23	10.4
Marital status
Single	42	18.9
Married	160	72.1
Divorce/widowed	20	9.0
Education
Junior high school/elementary school (≤ 9 years)	87	39.2
Senior high school (9 ~ 12 years)	48	21.6
≧College/Graduates (≥ 12 years)	87	39.2
Household annual income (USD) ^a
< 15,625	119	55.9
15,625 ~ 31,250	60	28.2
≥ 31,250	34	15.9
Cigarette smoking ^b
Yes	52	23.4
Alcohol consumption ^c
Yes	28	12.8
Coffee drinking ^d
Yes	89	40.1
Tea drinking ^e
Yes	134	60.6
Betel nut chewing ^f
Yes	13	5.9
Pesticide use at home
Yes	50	22.5
Lived near farmland (with 1 km) ^g
Yes	68	30.9
Habit of eating fried food ^h
Yes	145	65.6
Habit of eating grilled food ⁱ
Yes	165	74.7
Plastic tableware use
Yes	26	11.7
Plastic wrap use for refrigeration or heating
Yes	161	72.5
Plastic containers use for refrigeration or heating
Yes	124	55.9
Plastic bags use for refrigeration or heating
Yes	167	75.2

^a 9 missing values in household annual income; currency exchange rate of USD to new Taiwan dollar is 1:32
^b Participants smoking at least one cigarette per day
^c 4 missing values in alcohol consumption; participants consuming at least one bottle of alcohol per week
^d Participants consuming at least one cup of coffee per week
^e 1 missing values in tea drinking; participants consuming at least one cup of tea per week
^f Participants chewing at least one betel nut per week
^g 2 missing values in live near farm land
^h 1 missing value in habit of eating fried food
ⁱ 1 missing value in habit of eating grilled food

ISSN: 1476-069X