Table 3.
Median Number of Months Between CIDP Diagnosis and Receipt of Therapy, and Median Number of Months Receiving Therapy
| Study cohorts | ||||||||
|---|---|---|---|---|---|---|---|---|
| IVIG with/without another CIDP treatmenta (N = 133) | IVIG alone (N = 60) | IVIG + another CIDP treatmenta (N = 73) | Steroid alone (N = 290) | Steroid + plasma exchange (N = 3) | Steroid + immunosuppressant (N = 4) | Immunosuppressant alone (N = 4) | Plasma exchange alone (N = 1) | |
| Median number of months between CIDP diagnosis and treatment | ||||||||
| Receipt of first treatment | ||||||||
| Treatment with any of the therapies below (using the product that was received first) | 0.53 | 0.71 | 0.53 | 6.51 | 0.03 | 2.02 | 4.18 | 0.03 |
| IVIG | 0.69 | 0.71 | 0.66 | – | – | – | – | – |
| Steroid | 5.01 | – | 5.01 | 6.51 | 0.46 | 7.21 | – | – |
| Immunosuppressant | 4.45 | – | 4.45 | – | – | 3.06 | 4.18 | – |
| Plasma exchange | 10.5 | – | 10.50 | – | 0.03 | – | – | 0.03 |
| Median number of months receiving treatmentb | ||||||||
| IVIG | 9.79 | 9.04 | 9.82 | – | – | – | – | – |
| Steroid | 3.77 | – | 3.77 | 1.87 | 21.82 | 5.69 | – | – |
| Immunosuppressant | 4.36 | – | 4.36 | – | – | 10.10 | 6.81 | – |
| Plasma exchange | 3.45 | – | 3.45 | – | 0.69 | – | – | 0.03 |
a
Steroid and/or immunosuppressant and/or plasma exchange.
b
Calculated from first administration/prescription fill date to the last administration/prescription end date for any medication in the class.
CIDP indicates chronic inflammatory demyelinating polyneuropathy; IVIG, intravenous immunoglobulin.