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Table 2 Associations between exposure to modeled average ambient PM2.5 concentrations during gestation and first year after birth and Ewing sarcoma risk

From: Perinatal exposure to ambient fine particle air pollution and risk of childhood ewing sarcoma in a population-based case-control study in California (1988–2015)

 

Cases (n = 388)

Controls (n = 19341)

p-value

OR (95% CI)*

PM2.5 (µg/m3)

    
 

Mean (SD)

Mean (SD)

  

Gestational Period

22.59 (12.37)

23.27 (12.41)

0.29

 
 

N (%)

N (%)

0.48

 

 Q1 (< 13.68)

105 (27)

4836 (25)

 

1.00

 Q2 (13.68 - <20.08)

100 (26)

4834 (25)

 

0.98 (0.72, 1.32)

 Q3 (20.08 - <29.90)

99 (25)

4836 (25)

 

1.03 (0.76, 1.40)

 Q4 (≥ 29.90)

84 (22)

4835 (25)

 

0.87 (0.61, 1.25)

 

Mean (SD**)

Mean (SD**)

  

First Year after Birth

21.82 (11.60)

22.46 (11.70)

0.28

 
 

N (%)

N (%)

0.70

 

 Q1 (< 13.47)

107 (28)

4835 (25)

 

1.00

 Q2 (13.47 - <19.48)

92 (24)

4835 (25)

 

0.95 (0.70, 1.29)

 Q3 (19.48 - <28.76)

96 (25)

4836 (25)

 

1.09 (0.81, 1.49)

 Q4 (≥ 28.76)

93 (24)

4835 (25)

 

0.84 (0.58, 1.20)

  1. *Adjusted for individual-level factors: birth year, sex, birth weight, race, ethnicity, and maternal educational attainment. ** SD: standard deviation