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Table 2 Exposure to PM 10 , PM 2.5 , and PM 102.5 and risk of PD in the NursesHealth Study, 19902008 (N = 111,769 women at baseline)

From: Particulate matter and risk of parkinson disease in a large prospective study of women

   

Age adjusted

Multivariatea

 

PY

Cases

RR

95% CI

RR

95% CI

P-trend

Quartiles of PM 10

       

 3.8-21.0 μg/m3

484444

141

1.00

Ref

1.00

Ref

 

 21.0– 24.3 μg/m3

484483

135

1.06

(0.83, 1.34)

1.09

(0.86, 1.39)

 

 24.3 – 28.3 μg/m3

484520

120

1.02

(0.80, 1.30)

1.03

(0.80, 1.32)

 

 28.3 – 88.3 μg/m3

484550

112

1.03

(0.80, 1.32)

1.03

(0.78, 1.37)

0.92

Continuous^ PM 10

1937996

508

0.99

(0.86, 1.12)

0.99

(0.84, 1.16)

 

Quartiles of PM 2.5

       

 1.2-12.6 μg/m3

484429

131

1.00

Ref

1.00

Ref

 

 12.6-15.0 μg/m3

484482

131

1.12

(0.88, 1.43)

1.07

(0.83, 1.38)

 

 15.0-17.4 μg/m3

484513

137

1.23

(0.97, 1.57)

1.14

(0.88, 1.48)

 

 17.4-73.9 μg/m3

484573

109

1.17

(0.90, 1.51)

1.10

(0.83, 1.45)

0.43

Continuous^ PM 2.5

1937996

508

1.17

(0.90-1.51)

1.08

(0.81-1.45)

 

Quartiles of PM 102.5

       

 0-7.2 μg/m3

484479

149

1.00

(Ref)

1.00

(Ref)

 

 7.2-9.2 μg/m3

484496

121

0.87

(0.69, 1.11)

0.91

(0.71, 1.16)

 

 9.2-12.0 μg/m3

484495

119

0.87

(0.68, 1.11)

0.93

(0.72, 1.20)

 

 12.0-67.1 μg/m3

484506

119

0.87

(0.68, 1.11)

0.93

(0.69, 1.26)

0.64

Continuous^ PM 1025

1937996

508

0.90

(0.74-1.09)

0.92

(0.71-1.19)

 
  1. PY: person years; RR: relative risk; 95% CI: 95 percent confidence interval.
  2. aadjusted for age, smoking, region (northeast, midwest, west, and south), population density, caffeine intake (<100 mg/day vs. over 100 mg/day) and ibuprofen use (ever/never user).
  3. ^per 10 μg/m3.