In our report: “C-1 Combat Mortality: Why is Marine Combat Mortality Less than That of the Army (JCS) (March 1998),” volume 2, Figure 145 is the following table. It was part of the presentation done by Col. (Dr.) Ron Bellamy.Â
From Table 1, page 4, Medical Statistics in WWII, Office of the Surgeon General, US Army, 1975
                      The Adjutant       The Surgeon
Type of Casualty        General’s Report    General’s Report
Wounded in Action      592,170            723,560
  Carded for record only      —            123,836
  Wounded admissions       —            599,724
Total Deaths            216,005           213,030
  Killed in action        189,696           192,220
  Died of wounds         26,309            20,810
  Other battle deaths      18,869            16,793
Total killed and wounded  808,175           936,590
Ratio, Wounded/Deaths      2.74              3.40
Percent Deaths             0.27              0.23
If I calculate the wounded-to-killed ratios based upon KIA + DOW/WIA (wounded admissions) it comes out to 2.74 (as shown above) and 2.82-to-1 (vice 3.40).
Anyhow, the carded for record discussion for Vietnam is a little more complex. Maybe later.