Prevalence, incidence, and survival analysis of interstitial lung diseases in Hong Kong: a 16-year population-based cohort study.

Notably, a decreasing trend was also seen in IPF-focused studies in USA. 48 Since PiPF and IIP explained most cases in the current study, we performed a subgroup analysis on the APC of incidence on both PiPF and IIP over time, a consistent decreasing incidence trend was observed ( Supplementary Table S9 ).

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The trend pattern in males was slightly different from that in females, with an increasing trend observed from 2005 to 2011, followed by a stable trend thereafter.

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