Table 2.

Instruments for evaluating psychosocial variables

Instrument name	Author	No items	Factors/Dimensions	Answer options	Reliability α
Anxiety Inventory	Beck et al. [52] Validated with a Mexican population [53]	21	1) Subjective 2) Neurophysiological 3) Autonomic 4) Panic	0 (Little or none) to 3 (Severe)	0.92
Beck Depression Inventory (BDI-II)	Beck et al. [54] Validated in family caregivers of children with chronic diseases by Toledano-Toledano and Contreras-Valdez [5]	21	1) Somatic-affective 2) Cognitive	0 (Nothing) to 3 (Much)	0.91
Zarit Caregiver Burden Interview (ZCBI)	Zarit, Reever and Bach-Peterson [55] Validated with a Mexican population [56].	22	1) Impact of care on the caregiver 2) Caregiver-patient interpersonal relationship 3) Self-efficacy	0 (Never) to 4 (Always)	0.89
Quality of Life Inventory (Whoqol-Bref)	WHOQOL Group [57] Validated with a Mexican population by González-Celis and Sánchez-Sosa [58]	26	1) Physical health 2) Psychological health 3) Social relationships 4) Environment	1 (Very unsatisfied) to 5 (Very satisfied)	0.89