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 .
Intracapsular vs. extracapsular tonsillectomy: a comparison of pain.
OBJECTIVE To measure differences in postoperative pain in children undergoing intracapsular tonsillectomy vs. extracapsular tonsillectomy .  STUDY DESIGN Prospect i ve clinical trial carried out at a tertiary children 's hospital over 1 year . METHODS The study included 43 patients age 5 to 19 years with adenotonsillar hypertrophy , 27 undergoing extracapsular tonsillectomy and 16 undergoing intracapsular tonsillectomy . Tonsillectomy was performed in either an intracapsular or extracapsular fashion using bipolar electrosurgical scissors and monopolar suction cautery for hemostasis . Residents under faculty supervision performed all operations . Postoperative pain was assessed using the Wong-Baker Faces Pain Scale through postoperative day 10 . The patients recorded in a st and ardized diary pain scores and analgesic use . The main outcome measure was postoperative pain as measured by the Wong-Baker Faces Pain Scale . The quantity of postoperative pain medicine consumed was a secondary outcome measure . RESULTS Average postoperative pain for extracapsular tonsillectomy was 5.21 on a 10-point scale versus 2.75 for intracapsular tonsillectomy ( P < .0001 ) . CONCLUSIONS Intracapsular tonsillectomy with bipolar scissors results in less postoperative pain than extracapsular tonsillectomy with bipolar scissors in children age 5 to 19 years
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 .