text: The prevalence of idiopathic chronic<unk><unk>  (ICEP) remains unknown. The incidence of chronic<unk><unk>  in an Icelandic registry was 0.23 cases/100,000 population per year between 1990 and 2004. ICEP has been reported to contribute to 0 to 2500 per 100,000 of cases included in different registries of interstitial lung diseases. There is no racial predilection to ICEP. Women are more commonly affected by ICEP than men. ICEP typically affects patients in their 30s or 40s.
option_0: Eosinophilic pneumonia epidemiology and demographics
option_1: Hypersensitivity pneumonitis epidemiology and demographics
option_2: Cryptogenic organizing pneumonia epidemiology and demographics
option_3: Bronchiolitis epidemiology and demographics
option_4: Idiopathic interstitial pneumonia epidemiology and demographics
option_5: Bronchitis epidemiology and demographics
option_6: Idiopathic pulmonary fibrosis epidemiology and demographics
option_7: Bronchiectasis epidemiology and demographics