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Table 1 Characteristics of the study population of elderly women at baseline and at follow-up

From: Decline in air pollution and change in prevalence in respiratory symptoms and chronic obstructive pulmonary disease in elderly women

 

Baseline 1985-1994

Follow-up 2006

Follow-up 2007/2008

 

N

Mean ±SD

N

Mean ±SD

N

Mean ±SD

Age (year)

2115

54.5 ± 0.7

2106

71.3 ± 3.3

402

74.1 ± 2.6

BMI (kg/m 2 )

1874

27.2 ± 4.2

2048

27.0 ± 4.7

402

27.6 ± 4.6

 

N

%

N

%

N

%

Urban residency a

2116

55.7

2116

55.7

402

52.7

Smoking status:

      

   Passive smoking

2091

47.1

2014

14.5

402

5.7

   Ex smoker

1758

9.0

2063

14.6

402

15.7

   Current smoker

2112

11.9

2063

5.6

402

3.0

Indoor exposure b

2081

18.2

1809

12.6

402

12.9

Education:

2098

-

2098

-

402

-

   < 10 years

-

22.0

-

22.0

-

17.3

   = 10 years

-

48.9

-

48.9

-

51.0

   11-12 years

-

18.1

-

18.1

-

19.7

   > 12 years

-

11.0

-

11.0

-

12.2

Asthma

2074

2.0

2021

5.4

401

9.7

Hypertension

2077

23.3

1997

53.4

400

66.3

  1. SD: Standard deviation
  2. BMI: Body mass index (weight/height2)
  3. a Urban. Duisburg, Dortmund, Essen, Gelsenkirchen; rural: Borken
  4. b Heating with fossil fuels (gas, coal or wood)
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Respiratory Research

ISSN: 1465-993X

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