Table 8.

Cronbach alpha coefficient for the Experience of Caregiving Inventory (ECI) (Szmukler et al., 1996), the Adult Sibling Relationship Questionnaire (ASRQ) (Stocker et al., 1997).

Experience of caregiving items	Study sample	Szmukler et al., 1996
	α	α
Difficult behaviors	0.91	0.91
Negative symptoms	0.91	0.89
Stigma	0.87	0.82
Problems with services	0.88	0.90
Effects on family	0.82	0.82
Need to back up	0.72	0.76
Dependency	0.80	0.74
Loss	0.85	0.79
Positive personal experiences	0.88	0.86
Good aspects of the relationship	0.83	0.82
Sibling relationship items	Study sample	Stocker et al., 1997
	α	α
Warmth	0.98	0.97
Acceptance	0.93	0.88
Admiration	0.94	0.83
Affection	0.94	0.92
Emotional support	0.94	0.90
Intimacy	0.95	0.92
Instrumental support	0.82	0.76
Knowledge	0.90	0.88
Similarity	0.90	0.83
Conflict	0.92	0.93
Antagonism	0.88	0.90
Competition	0.72	0.85
Dominance	0.79	0.74
Quarreling	0.87	0.86
Rivalry	0.91	0.88
Maternal rivalry	0.92	0.85
Paternal rivalry	0.95	0.89
WHOQol- Bref domains	Study sample	World Health Organisation [WHO], 1998
	α	α
Physical domain	0.70	0.68–0.74
Psychological domain	0.79	0.79–0.80
Social domain	0.79	0.68–0.70
Environment domain	0.79	0.84–0.87