Table 2.
Incidence, duration, and prevalence of PTD and TRD stratified by database and cap on time to failure.
| Database | Cap | Depression Type | N in cohort | Number of cases | Incidence estimate | Incidence 95% CI | Mean duration (years) | Prevalence estimate |
|---|---|---|---|---|---|---|---|---|
| CCAE | N/A | PTD | 14,121,194 | 170,489 | 1207.32 | 1201.62, 1213.01 | 0.74 | 893.42 |
| MDCD | N/A | PTD | 1,005,864 | 20,814 | 2069.27 | 2041.45, 2097.09 | 0.56 | 1158.79 |
| MDCR | N/A | PTD | 1,742,452 | 13,401 | 769.09 | 756.12, 782.06 | 0.67 | 515.29 |
| CCAE | 3 months | TRD | 14,121,194 | 4,791 | 33.93 | 32.97, 34.89 | 1.54 | 52.25 |
| MDCD | 3 months | TRD | 1,005,864 | 661 | 65.71 | 60.71, 70.72 | 1.55 | 101.86 |
| MDCR | 3 months | TRD | 1,742,452 | 228 | 13.08 | 11.39, 14.78 | 1.61 | 21.07 |
| CCAE | 6 months | TRD | 14,121,194 | 7,130 | 50.49 | 49.33, 51.65 | 1.58 | 79.78 |
| MDCD | 6 months | TRD | 1,005,864 | 987 | 98.12 | 92.01, 104.24 | 1.57 | 154.06 |
| MDCR | 6 months | TRD | 1,742,452 | 320 | 18.36 | 16.36, 20.37 | 1.60 | 29.38 |
| CCAE | 24 months | TRD | 14,121,194 | 9,038 | 64.00 | 62.69, 65.32 | 1.71 | 109.44 |
| MDCD | 24 months | TRD | 1,005,864 | 1,209 | 120.20 | 113.43, 126.96 | 1.68 | 201.93 |
| MDCR | 24 months | TRD | 1,742,452 | 404 | 23.19 | 20.93, 25.45 | 1.73 | 40.11 |
1 Incidence/100,000 cohort members/year.
2 Prevalence/100,000 cohort members.