Table 6: Use of multiple classes of medication

No. of other classes	No. (%) of patients n = 10 043
0	1687* (16.8)
1	2090 (20.8)
2	2643 (26.3)
3	2329 (23.2)
≥ 4	1294 (12.9)

Note: COPD = chronic obstructive pulmonary disease. * Of 1687 patients with COPD, 1372 (81.3%) were taking non-COPD medications and 315 (18.7%) were not taking any medications.