Fig. 2
From: Association of spirometric restriction with mortality in the silicotics: a cohort study
Association of spirometric restriction and airflow obstruction with all-cause mortality by (a) shape, (b) profusion, (c) size of small opacities and (d) progressive massive fibrosis (PMF)
All hazard ratios were adjusted for age, BMI, smoking status, pack-years, tuberculosis, and cumulative silica exposure. Subjects with normal spirometry were used as reference
Abbreviations: RSP, restrictive spirometry pattern; AFO, airflow obstruction; PMF, progressive massive fibrosis