Patient-lifting injuries?

(1) Should "patient-lifting injuries" be "patient-inflicting injuries"?
(2) Does "requiring an average of four days away from work" mean "requiring an average of four days resting at home (or anywhere that is safe)"?

Context:

From 2003 through 2009 eight registered nurses were fatally injured at work, four from gunshot wounds, according to 2011 data from the federal National Institute for Occupational Safety and Health.
In 2009 alone, registered nurses reported 2,050 non-fatal assaults requiring an average of four days away from work, the institute says.
"Violence in the workplace is a big issue," says Adam Sachs, spokesman for the American Nurses Association, which last week announced a new initiative designed to help nurses assess workplace risks, including patient-lifting injuries and violence.