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Association between mefenamic acid treatment and therapeutic effect.
| Parameters of therapeutic effect | Mefenamic acid group (%) | Placebo group (%) | RR (95% CI) | NNT | P-value |
|---|---|---|---|---|---|
| Response | 40 | 0 | 0.63 (0.38–1.05) | 3.00 | 0.081 |
| Progression | 0 | 70 | 0.12 (0.01–0.85) | 1.71 | 0.033 |
Response is defined ≥50% decrease in PSA levels and progression is defined as ≥25% increase in PSA levels. CI, confidence interval; NNT, number needed to treat; PSA, prostate specific antigen; RR, relative risk.
