Factorial structure of the Spanish center for epidemiologic studies depression scales in HIV patients.

The factor structure of the Center for Epidemiological Studies Depression Scale (CES-D) (Radloff in Appl Psychol Meas 1(3):385-401, 1977) was examined in two independent samples of human immunodeficiency virus (HIV) patients. The first sample, composed of HIV patients undergoing hospital follow-up, was used to explore the factor structure of the CES-D. The second sample, composed of HIV patients confined in prison, was used to confirm the factor structure previously found. In both samples the best structure accounting for data was three 1st-order factors with a general 2nd-order factor of depression. We found a strong factorial invariance of this structure across samples, pointing out a high consistency of results in HIV patients. Additionally, the cut-off score for depression screening in this population was studied.