Table 8.
Estimated Economic Impact of Combined Oral Contraceptives due to Increased Incidence of Ulcerative Colitis.
| Women of reproductive age | Number on the pill | Incidence | ||
|---|---|---|---|---|
| 61,000,000 | 9,699,000 | 0.000122 | ||
| Estimated women on the pill at risk | 1,183 | |||
| Adjusted estimate | 1,444 | 1.22 (0.74–2.07) | Low RR (95 percent CI) | |
| Adjusted estimate | 1,870 | 1.58 (0.71–3.52) | High RR (95 percent CI) | |
| Excess cases | 260 | Low RR | ||
| Excess cases | 686 | High RR | ||
| Annual cost per patient with ulcerative colitis | US$12,900 | |||
| Estimated annual costs | US$3,358,143 | Low RR | ||
| Estimated annual costs | US$8,853,286 | High RR | ||
Note: CI = confidence interval; RR = relative risk.