All 4 faces pain scales were found to be adequately supported by psychometric data .
When given a choice between faces scales , children preferred the WBFPRS .
Confounding of pain intensity with affect caused by use of smiling and crying anchor faces is a disadvantage of the WBFPRS .
: For clinical use , we found no grounds to switch from 1 faces scale to another when 1 of the scales is in use .
CONTEXT : Numerous faces scales have been developed for the measurement of  pain intensity in children .
It remains unclear whether any one of the faces scales is better for a particular purpose with regard to validity , reliability , feasibility , and preference .
OBJECTIVES : To summarize and systematic ally review faces pain scales most commonly used to obtain self-report of pain intensity in children for evaluation of reliability and validity and to compare the scales for preference and utility .
Acetaminophen versus acetaminophen with codeine after pediatric tonsillectomy.
OBJECTIVE To compare the effectiveness of acetaminophen versus acetaminophen with codeine after pediatric tonsillectomy and adenoidectomy . STUDY DESIGN Prospect i ve , r and omized , double-blind study . METHODS Fifty-one children ages 3 to 12 years scheduled for outpatient tonsillectomy and adenoidectomy were studied . Patients were r and omly assigned to receive acetaminophen or acetaminophen with codeine in unlabeled bottles for postoperative pain control . The Wong-Baker FACES pain rating scale was used to help children quantify their level of pain after surgery . The level of pain , quantity of pain medication required , presence of side effects , and the percentage of a normal diet consumed was recorded for 10 postoperative days . RESULTS There was no difference ( P > .05 , all time points ) in the level of postoperative pain reported by the parents and children in the two groups . The acetaminophen with codeine group tended to have increased problems with nausea , emesis , and constipation , but these differences did not reach statistical significance . Children in the acetaminophen group consumed a significantly higher percentage of a normal diet on the first 6 postoperative days ( P < .05 , all time points ) . CONCLUSION There was no difference in the level of pain control provided by acetaminophen and acetaminophen with codeine as measured by the Wong-Baker FACES pain rating scale . Postoperative oral intake was significantly higher in children treated with acetaminophen alone
All 4 faces pain scales were found to be adequately supported by psychometric data .
When given a choice between faces scales , children preferred the WBFPRS .
Confounding of pain intensity with affect caused by use of smiling and crying anchor faces is a disadvantage of the WBFPRS .
: For clinical use , we found no grounds to switch from 1 faces scale to another when 1 of the scales is in use .
CONTEXT : Numerous faces scales have been developed for the measurement of  pain intensity in children .
It remains unclear whether any one of the faces scales is better for a particular purpose with regard to validity , reliability , feasibility , and preference .
OBJECTIVES : To summarize and systematic ally review faces pain scales most commonly used to obtain self-report of pain intensity in children for evaluation of reliability and validity and to compare the scales for preference and utility .