. 2022 Sep 10;21:84. doi: 10.1186/s12940-022-00888-2

Table 5.

Subgroup analysis of the association between per two-year mean 10-μg/m³ increase in PM_2.5 and metabolic syndrome, high triglyceride and high fasting blood among adults and elderly

Variable	MetS	P_inter	High TG	P_inter	High FBG	P_inter
Variable	OR (95%CI)	P_inter	OR (95%CI)	P_inter	OR (95%CI)	P_inter
Region		0.054		0.004*		< 0.001^*
Urban (n = 3613)	1.03 (0.85, 1.24)		1.15 (0.96, 1.36)		0.79 (0.66, 0.95) ^*
Rural (n = 3015)	1.38 (1.11, 1.70) ^*		1.71 (1.37, 2.13) ^*		1.87 (1.55, 2.25) ^*
Sex		0.275		0.848		0.517
Men (n = 2955)	1.24 (1.01, 1.53) ^*		1.34 (1.11, 1.62) ^*		1.23 (1.02, 1.47) ^*
Women (n = 3673)	1.09 (0.90, 1.31)		1.36 (1.12, 1.66) ^*		1.13 (0.95, 1.35)
Age		0.412		0.083		0.049^*
< 45 years(n = 2316)	1.07 (0.81, 1.39)		1.21 (0.96, 1.54)		0.89 (0.68, 1.16)
≥ 45 years(n = 4312)	1.19 (1.01, 1.39) ^*		1.43 (1.22, 1.69) ^*		1.26 (1.09, 1.45) ^*
Cigarette smoking		0.793		0.637		0.081
Nonsmoker(n = 4428)	1.16 (0.98, 1.38)		1.35 (1.15, 1.59) ^*		1.14 (0.98, 1.34)
Smoker(n = 2200)	1.17 (0.91, 1.50)		1.42 (1.20, 1.68) ^*		1.33 (1.07, 1.65) ^*
Alcohol consumption		0.156		0.195		0.261
Non-drinker (n = 3929)	1.20 (0.96, 1.50)		1.32 (1.06, 1.64) ^*		1.35 (1.10, 1.66) ^*
Drinker (n = 2699)	1.14 (0.95, 1.36)		1.37 (1.16, 1.61) ^*		1.10 (0.93, 1.29)
Exercise		0.269		0.015^*		0.040^*
No (n = 5479)	1.17 (1.01, 1.35) ^*		1.37 (1.18, 1.58) ^*		1.28 (1.11, 1.46) ^*
Yes (n = 1149)	1.14 (0.82, 1.60) ^*		0.97 (0.72, 1.31) ^*		0.95 (0.68, 1.33)
BMI		0.795		0.681		0.349
Underweight(n = 504)	1.02 (0.65, 1.58)		1.25 (0.48, 3.27)		1.72 (0.98, 3.02)
Normal (n = 3741)	1.16 (0.93, 1.43)		1.47 (1.20, 1.79) ^*		1.21 (1.02, 1.44) ^*
Over weight/Obese (n = 2383)	1.14 (0.96, 1.36)		1.28 (1.06, 1.53) ^*		1.12 (0.93, 1.36)
Grain consumption		0.713		0.897		< 0.001^*
< 400 g/daily(n = 3232)	1.32 (1.08, 1.62) ^*		1.38 (1.14, 1.68) ^*		1.59 (1.32, 1.91) ^*
≥ 400 g/daily (n = 3396)	1.09 (0.90, 1.34)		1.33 (1.11, 1.61) ^*		0.96 (0.80, 1.15)
Vegetable and Fruit consumption		0.979		0.869		0.419
< 400 g/daily(n = 3858)	1.25 (1.03, 1.51) ^*		1.41 (1.18, 1.69) ^*		1.43 (1.20, 1.70) ^*
≥ 400 g/daily (n = 2770)	1.14 (0.92, 1.41)		1.36 (1.10, 1.66) ^*		0.91 (0.75, 1.11)
Red Meat consumption		0.312		0.332		0.860
< 100 g/daily (n = 3970)	1.16 (0.97, 1.39)		1.29 (1.09, 1.53) ^*		1.33 (1.13, 1.57) ^*
≥ 100 g/daily (n = 2658)	1.19 (0.96, 1.49)		1.38 (1.13, 1.70) ^*		1.02 (0.83, 1.24)

AIC Akaike information criterion, BMI Body-mass index, CI Confidence interval, FBG Fasting blood glucose, HDL-C High-density lipoprotein cholesterol, MetS Metabolic syndrome, OR Odd ratio, TG Triglyceride

Adjusted with age, sex, education, marital status, body mass index, household income, exercise, cigarette smoking status, biomass fuel, alcohol consumption, red meat consumption

^∗: P < 0.05