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 .
Paracetamol versus ibuprofen: a randomized controlled trial of outpatient analgesia efficacy for paediatric acute limb fractures.
Paediatric limb fracture is a common injury that presents frequently to the ED . The primary objective of the present study was to determine whether ibuprofen provides better analgesia than paracetamol for paediatric patients discharged with acute limb fractures . A prospect i ve , r and omized controlled study was conducted in a children 's ED . Children aged 5 - 14 years with an acute limb fracture were r and omized to be prescribed paracetamol 15 mg/kg/dose every 4 h or ibuprofen 10 mg/kg/dose every 8 h. Objective ( child-reported ) pain scores using the ' Faces ' pain scale were measured over a 48 h period . Child-reported pain did not differ significantly between the paracetamol and ibuprofen groups ( mean pain score paracetamol 2.8 [ 95 % CI 2.4 - 3.4 ] vs 2.7 [ 95 % CI 2.1 - 3.3 ] , P = 0.73 ) . Parent-reported sleep quality did not differ between the two groups ( P = 0.78 ) . Child-reported pain score decreased over the 48 h of measurement ( P < 0.0001 ) . There were no significant differences in side-effects detected between the two groups . The present study shows that in the outpatient paediatric population , ibuprofen does not provide better analgesia than paracetamol .  Pain from an acute fracture can be managed by regular simple oral analgesia and immobilization
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 .