Development and evaluation of the content validity, practicability and feasibility of the Innovative dementia-oriented Assessment system for challenging behaviour in residents with dementia

Table 12 Content validity of the dimension “Mood & emotions”

		Relevance of the questions						Clarity of the questions						Meaningfulness of the answers						Completeness of the answers
No	Content of the items	Number of experts	Number of ratings of 3 or 4	I-CVI^a	p_c ^b	k* ^c	Evaluation^d	Number of experts	Number of ratings of 3 or 4	I-CVI^a	p_c ^b	k* ^c	Evaluation^ad	Number of experts	Number of ratings of 3 or 4	I-CVI^a	p_c ^b	k* ^c	Evaluation^d	Number of experts	Number of ratings of 3 or 4	I-CVI^a	p_c ^b	k* ^c	Evaluation^d
1	Boredom	10	10	1.00	0.001	1.00	****	10	6	0.60	0.205	0.50	**	10	8	0.80	0.044	0.79	****	10	9	0.90	0.010	0.90	****
2	Anxiety	10	10	1.00	0.001	1.00	****	10	6	0.60	0.205	0.50	**	10	8	0.80	0.044	0.79	****	10	9	0.90	0.010	0.90	****
3	Exhaustion	10	9	0.90	0.010	0.90	****	10	7	0.70	0.117	0.66	***	10	8	0.80	0.044	0.79	****	10	9	0.90	0.010	0.90	****
4	Impression of loneliness or isolation	10	9	0.90	0.010	0.90	****	10	6	0.60	0.205	0.50	**	10	7	0.70	0.117	0.66	***	10	9	0.90	0.010	0.90	****
5	Trusting relationships	10	7	0.70	0.117	0.66	***	10	5	0.50	0.246	0.34	*	10	8	0.80	0.044	0.79	****	10	6	0.60	0.205	0.50	**
6	Amount of occupation	10	8	0.80	0.044	0.79	****	9	7	0.78	0.070	0.76	****	10	8	0.80	0.044	0.79	****	10	5	0.50	0.246	0.34	*
7	Type of occupation	10	8	0.80	0.044	0.79	****	10	7	0.70	0.117	0.66	***	10	9	0.90	0.010	0.90	****	10	9	0.90	0.010	0.90	****
		S-CVI/AVE 0.87						S-CVI/AVE 0.64						S-CVI/AVE 0.80						S-CVI/AVE 0.80
		S-CVI/UA 0.29						S-CVI/UA 0.50						S-CVI/UA 0.00						S-CVI/UA 0.00

^a I-CVI (content validity index) = number of experts providing a rating of 3 or 4/number of experts
^b p_c (probability of chance occurrence) = [N!/A!(N-A)!] × 0.5^N, N = number of experts; A = number of experts agreeing on a rating of 3 or 4
^c k* (modified kappa) = (I-CVI-p_c)(1-p_c)
^d Evaluation criteria for level of content validity: relationship between I-CVI and k*; excellent validity = I-CVI ≥ 0.78 and k* >0.74 (****); good validity I-CVI < 0.78 and ≥ 0.60 and k* ≤0.74 (***); fair validity I-CVI < 0.6 and ≥ 0.40 and k* ≤0.59 (**); poor validity I-CVI < 0.4 and k* <0.40 (*)

ISSN: 1472-6963