The objective of a study by Strijbos et al. (A-58) was to compare the results of a 12-week hospitalbased outpatient rehabilitation program (group 1) with those of a 12-week home-care rehabilitation program (group 2) in chronic obstructive pulmonary disease with moderate to severe airflow limitation. A control group (group 3) did not receive rehabilitation therapy. Among the data collected were the following breathing frequency scores of subjects 18 months after rehabilitation:

Group Group 1 23123 12 16 24 12 16 24 16 14 16 12 12 14 16 12 18 14 12 15 14 12 18 16 12 16 12 18 24 12 12 16 12 12 24 12 15 18 12 10 18 20 16 Source: Data provided courtesy of Dr. Jaap H. Strijbos.