[Psychometric characteristics of the antiretroviral treatment satisfaction scale (ESTAR): ARPAS study (I)].
OBJECTIVE
To evaluate the psychometric characteristics, convergent validity and reliability of the antiretroviral treatment satisfaction scale (ESTAR, escala de satisfacción con el tratamiento antirretroviral).


METHODS
Patient satisfaction with ART was determined using the ESTAR questionnaire, developed in Spanish based on the English language version of the HIV-Treatment-Satisfaction Questionnaire (HIVTSQ). In order to evaluate this, internal consistency and test-retest reliability were measured. The construct analysis was performed by studying the covariance and correlation of the questions, and the convergent validity was assessed by using the MOS-HIV (Medical Outcomes Study HIV Health Survey) questionnaire as the standard, as was the content validity by the correlation between the ESTAR and the clinical and therapeutic variables.


RESULTS
The ESTAR is structured in two dimensions (clinical satisfaction and satisfaction with lifestyle) with slight modifications to the original version; question 4, discarded in the original version, has been reworded in the Spanish version, and question 9 was deleted because of low communality. As regards the test-retest reliability, all the questions show significant intraclass correlation coefficients (p<0.001). The internal consistency shows higher values than the original version in the lifestyle dimension (a=0.81 vs. a=0.74) and in the total score (a=0.84 vs. a=0.82). With regard to convergent validity, the ESTAR presents significant correlations with the MOS-HIV as a whole and with different dimensions of it, especially the association with mental health, health distress and cognitive functioning dimensions.


CONCLUSIONS
The ESTAR turns out to be a suitable, reliable instrument for evaluating satisfaction with ART by HIV+ patients.
Ventura Cerdá
J M
JM
Grupo de Trabajo VIH/SIDA, Sociedad Española de Farmacia Hospitalaria. ventura_jma@gva.es
Casado Gómez
M A
MA
Morales González
J M
JM
Ortega Valín
L
L
Ibarra Barruéta
O
O
Escobar Rodríguez
I
I
D000328:Adult; D044966:Anti-Retroviral Agents / Q000627:therapeutic use*; D005260:Female; D015658:HIV Infections / Q000188:drug therapy*; D006801:Humans; D008297:Male; D017060:Patient Satisfaction; D011594:Psychometrics; D011795:Surveys and Questionnaires
D044966:Anti-Retroviral Agents