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Incidence of asthma and respiratory symptoms by sex, age and smoking in a community study

T.M.L. Eagan, P.S. Bakke, G.E. Eide, A. Gulsvik
European Respiratory Journal 2002 19: 599-605; DOI: 10.1183/09031936.02.00247302
T.M.L. Eagan
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P.S. Bakke
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G.E. Eide
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A. Gulsvik
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Tables

  • Additional Files
  • Table 1—

    Characteristics of the Hordaland follow-up study cohort

    MalesFemales
    Total1352 (48.0)1467 (52.0)
    Age in 1985 yrs
     15–29489 (36.2)491 (33.5)
     30–49541 (40.0)573 (39.1)
     50–70322 (23.8)403 (27.5)
    Changes in smoking habits##
     Never-to-never427 (32.9)631 (45.6)
     Non-to-current67 (5.2)68 (4.9)
     Current-to-current395 (30.4)381 (27.5)
     Current-to-ex157 (12.1)136 (9.8)
     Ex-to-ex253 (19.5)167 (12.1)
    Pack-yrs¶¶
     0427 (32.9)631 (45.3)
     1–9312 (24.1)392 (28.1)
     10–19270 (20.8)226 (16.2)
     20+287 (22.1)144 (10.3)
    • Data are presented as n (%)

    • #: some subjects were not included in these categories due to lack of reporting of smoking, or inconsistencies

    • ¶: not all subjects responded to questions about the number of cigarettes they smoked per day or the number of years they had smoked

  • Table 2—

    Prevalence of respiratory symptoms and asthma at baseline and follow-up

    Males#Females¶All subjects+
    19851996/1997Increase19851996/1997Increase19851996/1997Increase
    Subjects n
    Respiratory symptoms and asthma
     Asthma3.66.42.82.95.62.73.46.02.6
     Morning cough23.724.71.018.225.06.821.124.93.8
     Daytime cough13.415.52.19.114.75.611.915.13.2
     Chronic cough11.512.10.68.012.34.310.012.22.2
     Phlegm cough25.026.31.317.221.13.920.723.62.9
     Dyspnoea grade 115.218.93.720.425.24.819.122.23.1
     Dyspnoea grade 28.112.14.011.820.18.311.216.25.0
     Dyspnoea grade 32.14.42.32.36.54.22.95.52.6
     Dyspnoea grade 41.01.60.61.02.91.91.42.30.9
     Attacks of dyspnoea11.312.71.413.015.92.912.214.42.2
     Wheezing22.035.713.718.536.518.020.636.115.5
    • Data are presented as %

    • #: n=1,352

    • ¶: n=1,467

    • +: n=2,819

  • Table 3—

    The cumulative incidences of asthma and respiratory symptoms in a Norwegian general population sample over 11‐yrs follow-up

    SubjectsnAsthmaMorning coughDaytime coughChronic coughPhlegm coughDyspnoea grade 1Dyspnoea grade 2Dyspnoea grade 3Dyspnoea grade 4Attacks of dyspnoeaWheezing
    Sex
    Males13524.014.911.28.417.914.08.83.71.49.123.9
    Females14673.517.311.19.615.320.914.95.32.611.527.5
    Age in 1985 yrs
     15–299802.613.09.37.716.215.09.32.41.511.529.7
     30–4911143.416.211.19.114.913.68.43.81.88.926.0
     50–707255.820.813.710.819.527.621.68.73.111.120.5
    Changes in smoking habits
     Never-to-never10583.013.59.07.13.314.811.34.12.17.619.9
     Non-to-current1353.122.116.916.025.216.19.82.32.311.440.0
     Current-to-current7764.125.117.113.924.821.011.94.51.714.037.7
     Current-to-ex2936.014.810.26.815.319.014.06.82.813.329.7
     Ex-to-ex4203.512.15.05.213.016.311.04.12.29.420.3
    Pack-yrs
     010583.013.59.07.013.314.811.34.12.17.619.9
     1–96563.312.27.66.013.815.08.92.51.711.128.4
     10–194962.721.913.611.321.221.411.43.82.313.131.6
     20+4316.329.519.916.126.921.315.68.82.114.334.0
    Total28193.716.211.19.016.517.511.94.52.010.325.8
    • Data are presented as % unless otherwise stated

  • Table 4—

    Development of asthma or respiratory symptoms with independent variables: sex, age, changes in smoking habits, and pack-yrs, during 11‐yrs follow-up

    AsthmaMorning coughDaytime coughChronic coughPhlegm coughDysproea grade 1Dysproea grade 2Dysproea grade 3Dysproea grade 4Attacks of dyspnoeaWheezing
    Sex
     Females (compared to males)1.1 (0.7–1.7)1.3 (1.0–1.7)1.1 (0.8–1.4)1.3 (1.0–1.7)0.9 (0.7–1.1)1.9 (1.5–2.4)2.3 (1.7–3.1)2.0 (1.7–3.1)2.4 (1.3–4.4)15 (1.1–2.0)1.4 (1.1–1.7)
    Age in 1985 (compared to 15–29) yrs
     30–491.2 (0.7–2.0)1.3 (1.0–1.8)1.3 (0.9–1.8)1.2 (0.8–1.6)0.9 (0.7–1.2)0.8 (0.6–1.1)0.8 (0.6–1.1)1.4 (0.8–2.4)1.0 (0.5–2.1)0.7 (0.5–0.9)0.8 (0.6–1.0)
     50–702.0 (1.1–3.6)1.9 (1.4–2.7)1.7 (1.2–2.0)1.4 (0.9–2.0)1.4 (1.0–2.0)2.0 (1.4–2.7)2.1 (1.5–3.0)2.9 (1.7–5.1)1.6 (0.8–3.3)0.9 (0.6–1.3)0.7 (0.5–0.9)
    Changes in smoking habits (compared to never-to-never)
     Non-to-current1.1 (0.4–3.2)1.9 (1.1–3.2)2.0 (1.1–3.4)2.3 (1.3–4.0)2.2 (1.4–3.7)1.2 (0.7–2.2)0.9 (0.5–1.8)0.6 (0.2–1.9)1.2 (0.3–4.3)1.4 (0.7–2.7)2.3 (1.5–3.6)
     Current-to-current1.0 (0.5–2.0)1.8 (1.2–2.6)1.5 (1.0–2.2)1.4 (0.9–2.1)2.0 (1.3–2.9)1.5 (1.0–2.2)0.8 (0.5–1.2)0.7 (0.4–1.2)0.7 (0.3–1.8)1.7 (1.1–2.6)2.0 (1.4–2.8)
     Current-to-ex1.2 (0.6–2.6)1.0 (0.6–1.6)0.8 (0.4–1.3)0.6 (0.3–1.1)1.1 (0.7–1.8)1.3 (0.8–2.0)1.1 (0.7–1.7)1.1 (0.6–2.2)1.2 (0.5–3.2)1.6 (1.0–2.6)1.4 (1.0–2.1)
     Ex-to-ex0.9 (0.5–1.8)0.7 (0.5–1.1)0.4 (0.2–0.7)0.6 (0.3–0.9)0.9 (0.6–1.3)1.1 (0.8–1.6)0.9 (0.6–1.4)0.7 (0.4–1.4)1.1 (0.5–2.5)1.3 (0.8–2.0)1.1 (0.8–1.5)
    Pack-yrs
     Per 10 pack-yrs increase1.2 (1.0–1.4)1.2 (1.0–1.3)1.2 (1.1–1.4)1.3 (1.1–1.5)1.1 (0.9–1.2)1.1 (1.0–1.2)1.3 (1.1–1.4)1.4 (1.2–1.6)1.1 (0.9–1.5)1.1 (1.0–1.3)1.1 (1.0–1.3)
    • Data are presented as adjusted odds ratio (95% confidence intervals)

  • Table 5—

    Increase in dyspnoea 1, 2, or 3–4 grades by independent variables sex, age, and pack-yrs in a multinominal logistic regression model

    Δ1 increaseΔ2 increaseΔ3–4 increase
    Compared to no increase in dyspnoea
    Sex
     Females (compared to males)1.6 (1.2–2.2)2.4 (1.7–3.4)1.8 (1.0–3.1)
    Age in 1985 (compared to 15–29) yrs
     30–490.9 (0.6–1.2)0.8 (0.5–1.2)1.0 (0.5–2.0)
     50–701.4 (0.9–2.0)2.1 (1.5–3.0)2.4 (1.3–4.6)
    Pack-yrs
     Per 10 pack-yrs increase1.3 (1.1–1.4)1.1 (1.0–1.3)1.2 (1.0–1.5)
    • Data are presented as odds ratio (95% confidence intervals)

Additional Files

  • Tables
  • Correction

    Correction, published in Eur Respir J 2003; 21: 735.

    Files in this Data Supplement:

    • Correction - Correction, published in Eur Respir J 2003; 21: 735.
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Incidence of asthma and respiratory symptoms by sex, age and smoking in a community study
T.M.L. Eagan, P.S. Bakke, G.E. Eide, A. Gulsvik
European Respiratory Journal Apr 2002, 19 (4) 599-605; DOI: 10.1183/09031936.02.00247302

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Incidence of asthma and respiratory symptoms by sex, age and smoking in a community study
T.M.L. Eagan, P.S. Bakke, G.E. Eide, A. Gulsvik
European Respiratory Journal Apr 2002, 19 (4) 599-605; DOI: 10.1183/09031936.02.00247302
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