Table 2

Difference in use of medication per year between OSAS cases and controls

Total (n=549)Men (n=401)Women (n=148)
CasesDifference (95% CI)CasesDifference (95% CI)CasesDifference (95% CI)
DDD = defined daily dose; DDS = days of drug supplied. Difference=mean difference (95% CI) between cases and controls.
Number of drugs used3.81.2 (0.8 to 1.6)3.20.9 (0.5 to 1.3)5.52.0 (1.2 to 2.9)
DDD366.699.4 (3.7 to 195.2)286.4100.2 (46.1 to 154.4)583.897.2 (–229.1 to 423.5)
DDS444.8157.4 (95.9 to 218.8)345.7108.1 (47.3 to 168.8)713.1290.9 (133.5 to 448.3)
Prescriptions per year11.83.3 (1.5 to 5.2)9.12.0 (0.3 to 3.8)18.86.9 (1.8 to 12.0)
Total cost per year ($Can)407.98155.91 (91.34 to 220.49)324.29108.73 (44.25 to 173.22)634.74283.73 (120.05 to 447.42)
Cost per prescription ($Can)34.722.51 (–0.86 to 5.87)35.522.29 (–2.25 to 6.84)33.692.91 (–1.74 to 7.57)