TABLE 2

Frequency of 10 pre-specified disease categories among patients diagnosed with idiopathic pulmonary fibrosis (IPF) and sex- and age-matched population controls

Disease categoryIPF casesControls
n (%)First occurrence relative to IPF diagnosis months median (IQR)n (%)First occurrence relative to index date months median (IQR)
Dyspnoea91 (14.0)2.2 (0.9–3.7)28 (0.4)3.6 (2.7–4.4)
Non-IPF IIP86 (13.2)2.7 (1.0–4.3)n<10n<10
Pneumonia56 (8.6)2.0 (0.8–3.8)42 (0.6)2.9 (1.5–4.1)
COPD28 (4.3)1.9 (0.9–2.7)31 (0.5)2.8 (1.7–4.2)
Cough19 (2.9)2.8 (1.7–4.0)n<10n<10
Pulmonary hypertension17 (2.6)1.7 (1.0–4.2)n<10n<10
Osteoporosis17 (2.6)2.4 (1.6–4.1)25 (0.4)2.5 (1.4–4.5)
Heart failure17 (2.6)1.8 (0.5–3.9)35 (0.5)2.7 (1.0–3.8)
Cardiac valve disease11 (1.7)2.6 (2.2–3.2)24 (0.4)2.9 (1.6–4.1)
Diabetes11 (1.7)3.1 (1.9–4.3)25 (0.4)3.3 (2.2–4.6)

IQR: interquartile range; IIP: idiopathic interstitial pneumonia.