| 1) Low potency/ Low dose n (%) | 2) High potency/ Low dose n (%) | 3) High potency/ High dose n (%) | Chi-square P-value | |
| Aged < 85 years | ||||
| Primary prevention (N=30138) | 6865 (22.8) | 12338 (40.9) | 10935 (36.3) | < 0.0001 (for each two groups) |
| Secondary prevention (N=11458) | 2177 (19.0) | 3098 (27.0) | 6183 (54.0) | |
| Aged >85 years | 0.24 (1 vs 2) < 0.0001 (1 vs 3; 2 vs 3) | |||
| Primary prevention (N=24766) | 9571 (38.6) | 9607 (38.8) | 5588 (22.6) | |
| Secondary prevention (N=14748) | 4649 (31.5) | 4806 (32.6) | 5293 (35.9) |