TABLE 1

Frequency of calculable ADO (age, dyspnoea, airflow obstruction) score measurements in the overall population of The Health Improvement Network patients

Measurements per subjectSubjectsTotal measurements
0#34 706 (53)0 (0)
1#17 396 (27)17 396 (34)
2#8618 (13)17 236 (34)
33393 (5)10 179 (20)
41073 (2)4292 (8)
5263 (0)1315 (3)
659 (0)354 (1)
713 (0)91 (0)
83 (0)24 (0)
Total65 52450 877

Data are presented as n (%); right column calculated by multiplying number of measurements by number of subjects in the same row (middle column). #: subjects were excluded from analysis.