TABLE 4

Prevalence of syndromic diagnoses by age group

Syndromic diagnosisAge 15–34 years (n=102)Age 35–54 years (n=235)Age 55–74 years (n=513)Age ≥75 years (n=96)
n (%)95% CIn (%)95% CIn (%)95% CIn (%)95% CI
Fixed airflow limitation (COPD) without eosinophilia1 (1.0)0–2.915 (6.4)3.3–9.582 (16.0)12.8–19.215 (15.6)8.4–22.9
Fixed airflow limitation (COPD) with eosinophilia1 (1.0)0–2.914 (6.0)2.9–9.053 (10.3)7.7–13.015 (15.6)8.4–22.9
Reversible airflow limitation (asthma)3 (2.9)0–6.25 (2.1)0.3–4.015 (2.9)1.5–4.42 (2.1)0–4.9
Other airflow limitation#8 (7.8)2.6–13.19 (3.8)1.4–6.318 (3.5)1.9–5.12 (2.1)0–4.9
Lower respiratory tract infection13 (12.8)6.3–19.210 (4.3)1.7–6.848 (9.4)6.8–11.910 (10.4)5.1–18.3
Tuberculosis4 (3.9)0.2–7.74 (1.7)0.1–3.46 (1.2)0.2–2.10 (0.0)
Heart failure0 (0.0)8 (3.4)1.1–5.729 (5.7)3.7–7.79 (9.4)3.5–15.2
Upper respiratory tract infection (common cold)25 (24.5)16.2–32.952 (22.1)16.8–27.461 (11.9)9.1–14.79 (9.4)3.5–15.2
None of above syndromes¶,+53 (52.0)42.3–61.7125 (53.2)46.8–59.6238 (46.4)42.1–50.742 (43.8)33.8–53.7

31 paediatric patients <15 years old not included. #: airflow limitation on initial spirometry without measure of post-bronchodilator spirometry; : includes patients without chest radiograph, spirometry or both; +: with none of the other syndromes.