Welcome to the wonderful world of statistics
There is good statistical evidence that regular PSA testing for prostate cancer saves no lives whatsoever.
Some sets of data show that for every person saved through diagnosis and successful treatment there is another person without cancer who dies caused by the risks involved in the subsequent diagnostics.
But on to Bladder Cancer...
So the article is a simple statistically analysis which concludes what hopefully every urologist at least empirically knows: that your [bladder] cancer risk varies depending upon a number of factors.
Triage uses a slightly less simple statistical analysis.
With Triage you do the actual test and then skew the result based on the patient details.
But what you could do is apply the statistics first and if the risk is low enough, send them home with a couple of aspirin and instructions to come back in a month if they are not better. You would just do the CxBladder test on the higher risk people.
I bet Kaiser are, with this CxBladder trail are trying to get some decent data on whether/where it could efficiently (i.e. save money) fit into their regime.
Best Wishes
Paper Tiger