RT Journal A1 PEARL R T1 A statistical discussion of the relative efficacy of different methods of treating pneumonia JF Archives of Internal Medicine JO Archives of Internal Medicine YR 1919 FD October 1 VO 24 IS 4 SP 398 OP 403 DO 10.1001/archinte.1919.00090270044004 UL http://dx.doi.org/10.1001/archinte.1919.00090270044004 AB Recently Head1 contributed an interesting discussion of the results of treating post-influenzal pneumonia by the open as contrasted with the close ward method. The general result apparently was to show that the latter method was greatly superior to the former, as evidenced by the case fatality rates under the two modes of procedure. While the author definitely draws this conclusion and states with confidence that the study of the 1,400 cases he dealt with "points the way to the more successful management of this disease," he also raises a rather obvious point of criticism to the results as they stand, using the following words:The question at once arises, Is the lowered mortality here shown in favor of the closed ward treatment a real gain in the management of the disease over the open ward method, or are the favorable results only a coincidence, an expression of a lowered mortality