Yssup,
I think maybe the point isn't as fine as you think it is. I've read this Kaiser report front-to-back, top-to-bottom and inside out, and NOWHERE can I find the numbers you cite. Are you, perhaps, relying on someone else's summary of this report? But maybe I'm just temporarily learning-disabled, so could you perhaps open it up and tell me on which page and in which paragraph the 57% figure is located?
Before you do, perhaps you should know that after reading the report and failing to find the statistic you cite, I did a keyword search and found the number "57" in only one context: 97% of unionized firms offer employee-sponsored healthcare vs 57% of non-unionized firms (pg 4, middle column, under heading "Availability of Employer-Sponsored Coverage"). Other than this one instance, the number 57 doesn't appear in this document.
There are 9 "exhibits" or charts, labeled A thru I, in which data are presented graphically. Not one of these exhibits deals with the subject you mention. In fact, the study consistently defined "large" companies as those with > 200 employees. I can find only one area in which the study bothers itself with further refining the "over 200 employees" category. It finds that 20% of companies with > 1,000 employees have on-site health facilities (pg 7, under "Other Topics"). Other than that, I can find no reference in this study to companies of 5,000 employees - or ANY size over 200 employees. Again, I did a keyword search and did not find "5,000" in the document.
Now there IS one statistic in this document that speaks to a point I made earlier (responding to Natalie Reign) - that being the myth that large groups lead to lower premiums. I'll cut and paste from the document so there can be no chance of error:
Average premiums for family coverage are
lower for workers in small firms (3–199
workers) than for workers in large firms
(200 or more workers).
This is from pg 1, bottom of column 1, continuing to top of column 2. And the context here is total premium, not the subsidized premium paid by the employee.
So let's have the debate. But let's quote accurately.