R Under development (unstable) (2024-12-09 r87433 ucrt) -- "Unsuffered Consequences"
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> #
> # Verify the success of my "stop the :: madness" fixes
> #
> library(survival)
> aeq <- function(x, y, ...) all.equal(as.vector(x), as.vector(y), ...)
> 
> fit1a <- coxph(Surv(time, status) ~ age + strata(sex) + cluster(inst), lung)
> fit1b <- coxph(Surv(time, status) ~ age + survival::strata(sex) +
+                    survival::cluster(inst), lung)
> all.equal(fit1a, fit1b)
[1] TRUE
> 
> fit2a <- survdiff(Surv(time, status) ~ ph.ecog + strata(sex), lung)
> fit2b <- survdiff(Surv(time, status) ~ ph.ecog + survival::strata(sex), lung)
> all.equal(fit2a, fit2b)
[1] TRUE
> 
> fit3a <- survreg(Surv(time, status) ~ ph.ecog + strata(sex), lung)
> fit3b <- survreg(Surv(time, status) ~ ph.ecog + survival::strata(sex), lung)
> all.equal(fit3a, fit3b)
[1] TRUE
> 
> fit4a <- concordance(Surv(time, status) ~ ph.ecog + strata(sex), lung)
> fit4b <- concordance(Surv(time, status) ~ ph.ecog + survival::strata(sex), lung)
> all.equal(fit4a, fit4b)
[1] TRUE
> 
> proc.time()
   user  system elapsed 
   0.79    0.09    0.87