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Table 3 The hazard ratios (HRs) of osteoporosis incidence according to the levels of air pollutants

From: Incidence of osteoporosis and ambient air pollution in South Korea: a population-based retrospective cohort study

Quartile for air pollutants

Case/participants

Annual incidence rate per 100,000

Total (n = 237,149)

HR

95% CI

P for trend

Lower

Upper

PM10

Q1

12,805/59,520

1655

1

  

0.021

Q2

12,450/56,657

1690

1.034

1.009

1.062

Q3

12,699/58,297

1682

1.023

0.997

1.050

Q4

14,647/62,675

1798

1.035

1.009

1.063

NO2

Q1

11,270/56,710

1529

1

  

0.602

Q2

11,047/55,175

1540

1.005

0.981

1.029

Q3

13,423/58,788

1756

1.015

0.988

1.042

Q4

16,861/66,476

1951

1.021

0.992

1.051

SO2

Q1

12,542/57,916

1666

1

  

0.062

Q2

13,523/59,347

1753

0.998

0.975

1.022

Q3

12,249/58,741

1604

0.976

0.951

1.000

Q4

14,287/61,145

1797

1.001

0.974

1.026

CO

Q1

12,324/56,262

1685

1

  

0.753

Q2

13,856/61,355

1737

1.001

0.977

1.026

Q3

14,176/62,220

1753

1.007

0.981

1.034

Q4

12,245/57,312

1643

0.998

0.971

1.023

PM2.5

Q1

748/52,226

1433

1

  

0.506

Q2

718/51,355

1399

0.993

0.965

1.022

Q3

957/68,450

1398

0.983

0.956

1.010

Q4

984/65,118

1511

1.007

0.985

1.029

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BMC Public Health

ISSN: 1471-2458

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