Trial 1: median lifespan control 20 days, treated 19 days (22 worms censored)
Trial 2: median lifespan control 19 days, treated 17 days (21 worms censored)
Trial 3: median lifespan control 20 days, treated 22 days (18 worms censored)
A. All worms pooled (315 vs 315), log-rank test: chi2(1) = 0.22, p = 0.64
B. Log-rank test stratified by trial: chi2(1) = 0.04, p = 0.85
C. Plate medians as n (9 vs 9), log scale with trial as a block: treated / control 1.02 (95% CI 0.92 to 1.13), p = 0.74
D. Trial medians, log ratio per trial (paired, n = 3): treated / control 0.98 (95% CI 0.75 to 1.27), p = 0.75