Why HMS Queen Mary's survivor totals differ

Why do sources disagree over the number of survivors from HMS Queen Mary?

Some totals may include men recovered alive who later died of wounds. That possible difference in definitions is suggested without establishing the history behind each published figure.

One suggested explanation for Queen Mary's different survivor totals is that some men were rescued alive and subsequently died of their injuries. A total based on recovery from the water can differ from one based on ultimate survival. Casualty categories also distinguish those killed in action from those who reached medical care and later died of wounds. This is offered as a possible explanation, without a reconciliation of particular published totals.