Return to the World Health Organization Quality of Life Scale (WHOQOL-BREF) page
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						THE WORLD HEALTH ORGANIZATION QUALITY OF LIFE (WHOQOL) -BREF (US English version)
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Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 05-16-2016
last updated:  11-06-2019 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC

Script Copyright © 11-06-2019 Millisecond Software

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BACKGROUND INFO 	
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This script implements the (US English Version) of World Health Organization Quality of Life scale 
(an abbreviated generic Quality of Life Scale developed through the World Health Organization)

the instrument (US English Version) can be downloaded from:
http://depts.washington.edu/seaqol/WHOQOL-BREF

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OVERVIEW
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self-administered questionnaire with 26 5-point Likert questions											  

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DURATION 
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the default set-up of the script takes appr. XXX minutes to complete
(if no task duration is provided, please contact Millisecond Software (katjab@millisecond.com)

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DATA FILE INFORMATION 
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The default data stored in the data files are:

(1) Raw data file: 'whoqol_bref.iqdat'

date, time:						date and time script was run with the current group/subjectnumber 
subject, group, session:	  		 with the current subject/groupnumber/session id
build:							the Inquisit build 

q*_response:						response given (in assigned values)
									Scale: 1 (most negative response) - 5 (most positive response) - wording depends on question
									R = automatically reversed coded questions (here: q3R, q4R, q26R)
									
q*_latency:						how much time (in ms) the participant spent on the surveypage with this particular 
								question (the last time this particular surveypage was visited)

(2) Summary data file: 'whoqol_bref_summary.iqdat' (Inquisit Lab: one data file per participant)

computer.platform:				the platform the script was run on (win/mac/ios/android)
script.startdate:					date script was run
script.starttime:					time script was started
script.subjectid:					assigned subject id number
script.groupid:					assigned group id number
script.sessionid:					assigned session id number
script.elapsedtime:				time it took to run script (in ms); measured from onset to offset of script
script.completed:					0 = script was not completed (prematurely aborted); 
									1 = script was completed (all conditions run)								
								
Raw Scores:
Domain1_raw:					calculates the raw score for Domain1 (PHYSICAL) by adding the responses to the Domain 1 questions
								(reversed items are automatically reversed scored)
								if 1 item is missing: the score gets replaced with the mean of the remaining 6 scores
								if more than 1 item is missing: no raw score is calculated
								Range: 7-35

Domain2_raw:					calculates the raw score for Domain2 (PSYCHOLOGICAL) by adding the responses to the Domain 2 questions
								(reversed items are automatically reversed scored)
								No raw score is calculated if not all questions are answered
								Range: 6-30
							
Domain3_raw:					calculates the raw score for Domain3 (SOCIAL RELATIONSHIP) by adding the responses to the Domain 3 questions
								(reversed items are automatically reversed scored)
								No raw score is calculated if not all questions are answered
								Range: 3-15
							
Domain4_raw:					calculates the raw score for Domain4 (ENVIRONMENT) by adding the responses to the Domain 4 questions
								(reversed items are automatically reversed scored)
								if 1 item is missing: the score gets replaced with the mean of the remaining 7 scores
								if more than 1 item is missing: no raw score is calculated
								Range: 8-40
								
							
Transformed Scores: 
	
Domain1_TS100:					transformed score for Domain 1 (PHYSICAL) on the scale 0-100
									((Raw Score - 7)/28) * 100
									=> lowest score (7) gets transformed to 0
									=> highest score (35) gets transformed to 100
									
Domain2_TS100:					transformed score for Domain 2 (PSYCHOLOGICAL) on the scale 0-100
									((Raw Score - 6)/24) * 100
									=> lowest score (6) gets transformed to 0
									=> highest score (30) gets transformed to 100

Domain3_TS100:					transformed score for Domain 3 (SOCIAL RELATIONSHIP) on the scale 0-100	
									((Raw Score - 3)/12) * 100
									=> lowest score (3) gets transformed to 0
									=> highest score (15) gets transformed to 100
									
Domain4_TS100:					transformed score for Domain 4 (ENVIRONMENT) on the scale 0-100
									((Raw Score - 8)/32) * 100
									=> lowest score (8) gets transformed to 0
									=> highest score (40) gets transformed to 100

countValid1-
countValid4:						store the number of questions that were answered for domain1-domain4

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QUESTIONNAIRE SET-UP & SCORING
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26 questions, questions 3, 4, 26 automatically reversed scored

SCORING
scoring of the questions follows the guidelines posted on: 
http://depts.washington.edu/seaqol/docs/Wq_bref.txt

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INSTRUCTIONS
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http://depts.washington.edu/seaqol/WHOQOL-BREF

"This assessment asks how you feel about your quality of life, health, or other areas of your life. Please answer all the
questions. If you are unsure about which response to give to a question, please choose the one that appears most
appropriate. This can often be your first response.
Please keep in mind your standards, hopes, pleasures and concerns. We ask that you think about your life in the last
two* weeks."

*to change the instructions to the "last 4 weeks", change instructions under section SURVEYPAGES