Table 2.
Kaplan–Meier estimates of the cumulative incidences of strict and clinical FRNS
| 3-Month Group (n=62) | 6-Month Group (n=64) | Difference (%; 95% CI) | Log Rank Test | |
|---|---|---|---|---|
| Strict FRNS (%) | ||||
| 6 months | 14.5±4.5 | 3.1±2.2 | −11.40 (−21.20, −1.60) | |
| 1 year | 38.7±6.2 | 39.1±6.1 | 0.40 (−16.60, 17.40) | |
| 2 years | 45.2±6.3 | 45.6±6.2 | 0.40 (−16.90, 17.70) | |
| 3 years | 45.2±6.3 | 49.3±6.4 | 4.10 (−13.50, 21.70) | |
| 4 years | 45.2±6.3 | 52.5±6.7 | 7.30 (−10.70, 25.30) | |
| 5 years | 45.2±6.3 | 52.5±6.7 | 7.30 (−10.70, 25.30) | P=0.91 |
| Clinical FRNS (%) | ||||
| 6 months | 17.7±4.9 | 10.9±3.9 | −6.80 (−19.10, 5.50) | |
| 1 year | 41.9±6.3 | 46.9±6.2 | 5.00 (−9.10, 19.10) | |
| 2 years | 50.1±6.4 | 53.3±6.3 | 3.20 (−14.40, 20.80) | |
| 3 years | 50.1±6.4 | 59.4±6.4 | 9.30 (−8.40, 27.00) | |
| 4 years | 50.1±6.4 | 59.4±6.4 | 12.20 (−5.70, 30.10) | |
| 5 years | 50.1±6.4 | 62.3±6.5 | 12.20 (−5.70, 30.10) | P=0.76 |
Data are expressed as percentages ± SEMs at 6 months and yearly afterward. Between-group differences are expressed as percentages with 95% CIs. Log rank tests were performed on all available data at the end of follow-up. Clinical FRNS, FRNS according to the definition of strict FRNS or other indications for additional treatment measures (e.g., prednisolone maintenance therapy, ciclosporin, etc.); strict FRNS, FRNS based on more than or equal to two relapses within 6 months after initial treatment or four relapses within any 12 months.