The effort-reward imbalance questionnaire in Greek: translation, validation and psychometric properties in health professionals.
OBJECTIVE
The aim of the present study was to translate, adapt and validate the Effort-reward imbalance (ERI) questionnaire in a sample of Greek healthcare professionals.


METHODS
An internationally recommended methodology was followed to perform translation of the ERI instrument into the Greek language. The questionnaire was then randomly administered to 600 Greek physicians, nurses, physiotherapists and laboratory staff, and 456 questionnaires with no missing data on the ERI items were returned (76% response rate). Tool validation included assessment of internal consistency, factorial structure, discriminant validity and presence of floor or ceiling effects. Criterion validity was demonstrated by investigating the association of theoretically relevant ERI summary measurements with respondents' self-rated health.


RESULTS
The Greek version of the ERI questionnaire showed good psychometric properties. Cronbach's alpha values were 0.79, 0.72 and 0.75 for the three ERI scales of effort, reward and overcommitment respectively. Exploratory factor analysis yielded a 5-factor solution that closely reflected the original theoretical ERI model. Significant associations were found between respondents' age, gender and specific occupation with ERI scores. ERI ratio and "overcommitment" scores in the highest tertiles were associated with elevated odds ratios (OR) of below-average self-rated health (OR=5.38, 95% confidence intervals 1.77 to 16.38, p=0.003, and OR=3.41, 95% confidence intervals 1.39 to 8.38, p=0.007, respectively).


CONCLUSIONS
The translated and adapted Greek version is comparable with the original ERI instrument in terms of validity and factorial structure and is suitable for assessment of the psychosocial work environment of Greek healthcare professionals.
Greek Junior Doctors and Health Scientists Society, Greece. msaouel@gmail.com
Pavlos
P
Msaouel
Nikolaos C
NC
Keramaris
Alexandros P
AP
Apostolopoulos
Nikolaos
N
Syrmos
Theocharis
T
Kappos
Athanasios
A
Tasoulis
Elli-Sophia
ES
Tripodaki
Evangelia
E
Kagiampaki
Ioannis
I
Lekkas
Johannes
J
Siegrist
D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D003142:Communication; D016001:Confidence Intervals; D003430:Cross-Sectional Studies; D005260:Female; D006115:Greece; D006282:Health Personnel; D006801:Humans; D007802:Language; D008297:Male; D008875:Middle Aged; D008960:Models, Psychological; D016272:Occupational Health / Q000706:statistics & numerical data*; D016017:Odds Ratio; D011594:Psychometrics; D015203:Reproducibility of Results; D012201:Reward; D013315:Stress, Psychological; D011795:Surveys and Questionnaires; D055815:Young Adult