Table 1. Anti-influenza drug prescription rates/100,000 enrollees and proportions of all anti-influenza drug prescriptions, United States, weeks 36–44, 2004 and 2005*.
| Medication | Anti-influenza prescription rates/100,000 enrollees of all ages, weeks 36–44 |
% Total anti-influenza prescriptions |
|||||
|---|---|---|---|---|---|---|---|
| 2004 | 2005 | Rate ratio (2005/2004) | 95% Confidence interval | 2004 | 2005 | ||
| Neuraminidase inhibitors | |||||||
| Oseltamivir |
27.3 |
133 |
4.88 |
4.79–4.97 |
|
36.99 |
76.89 |
| Zanamivir | 0.35 | 1.39 | 4.00 | 3.38–4.75 | 0.47 | 0.80 | |
| Adamantanes | |||||||
| Amantadine |
41.7 |
36.3 |
0.87 |
0.85–0.89 |
|
56.53 |
20.93 |
| Rimantadine | 4.43 | 2.37 | 0.54 | 0.50–0.58 | 6.00 | 1.37 | |
| All anti-influenza drugs | 80.0 | 173.2 | 2.17 | 2.14–2.19 | 100 | 100 | |
*Sums do not equal 100% because of rounding.