The @ factsheet groups demonstrated more knowledge ( P < @ ) about effective pain management ( mean without pretest : @ -LSB- SD = @ -RSB- ; with pretest : @ -LSB- @ -RSB- ) compared with the @ control groups ( without pretest : @ -LSB- @ -RSB- ; with pretest : @ -LSB- @ -RSB- ) immediately after review ; and the factsheet and pretest group scored higher than the factsheet only group .