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Table S1.Self-report of a physicians diagnosis of COPD versus spirometry-defined diagnosis of COPD
Spirometry-based diagnosis of COPD Self-reported diagnosisCOPD Absent COPD PresentTotal | No53980619Yes139528667Total6786081286
COPD defined as FEV1 d" 8 0 % p r e d i c t e d a n d F E V 1 t o F V C r a t i o l e s s t h a n t h e l o w e r l i m i t o f n o r m a l ( L L N ) ( s e e M e t h o d s ) . <