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Table 9 Content validity of the dimension “Physical discomfort”

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

  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-CVIa pb k* c Evaluationd Number of experts Number of ratings of 3 or 4 I-CVIa pc b k* c Evaluationd Number of experts Number of ratings of 3 or 4 I-CVIa pc b k* c Evaluationd Number of experts Number of ratings of 3 or 4 I-CVIa pc b k* c Evaluationd
1 Health problems generic 9 8 0.89 0.018 0.89 **** 9 7 0.78 0.070 0.76 **** - - - - - - - - - - - -
2 Pain 10 10 1.00 0.001 1.00 **** 10 10 1.00 0.001 1.00 **** 9 8 0.89 0.018 0.89 **** 9 6 0.67 0.164 0.60 ***
3 Depression 10 10 1.00 0.001 1.00 **** 8 8 1.00 0.004 1.00 **** 8 7 0.88 0.031 0.87 **** 9 7 0.78 0.070 0.76 ****
4 Hallucination/delusion 10 10 1.00 0.001 1.00 **** 10 9 0.90 0.010 0.90 **** 10 9 0.90 0.010 0.90 **** 10 8 0.80 0.044 0.79 ****
5 Sleep 10 10 1.00 0.001 1.00 **** 10 8 0.80 0.044 0.79 **** 10 8 0.80 0.044 0.79 **** 10 7 0.70 0.117 0.66 ***
6 Bowel elimination 10 10 1.00 0.001 1.00 **** 10 9 0.90 0.010 0.90 **** 10 8 0.80 0.044 0.79 **** 10 8 0.80 0.044 0.79 ****
7 Urinary elimination 10 10 1.00 0.001 1.00 **** 10 8 0.80 0.044 0.79 **** 10 9 0.90 0.010 0.90 **** 10 8 0.80 0.044 0.79 ****
8 Thirst/hunger 8 8 1.00 0.004 1.00 **** 10 8 0.80 0.044 0.79 **** 10 8 0.80 0.044 0.79 **** 10 8 0.80 0.044 0.79 ****
9 Need for movement 10 7 0.70 0.117 0.66 *** 10 8 0.80 0.044 0.79 **** 10 8 0.80 0.044 0.79 **** 10 8 0.80 0.044 0.79 ****
10 Breathing/circulatory problems 10 9 0.90 0.010 0.90 **** 9 7 0.78 0.070 0.76 **** 10 8 0.80 0.044 0.79 **** 10 8 0.80 0.044 0.79 ****
11 Discomfort 10 6 0.60 0.205 0.50 ** 10 5 0.50 0.246 0.34 * 9 6 0.67 0.164 0.60 *** 9 6 0.67 0.164 0.60 ***
12 Other relevant health problems 9 8 0.89 0.018 0.89 **** 8 6 0.75 0.109 0.72 *** 8 5 0.63 0.219 0.52 ** 8 6 0.75 0.109 0.72 ***
13 Side effects of medication 9 9 1.00 0.002 1.00 **** 9 6 0.67 0.164 0.60 *** 9 9 1.00 0.002 1.00 **** 9 8 0.89 0.018 0.89 ****
   S-CVI/AVE 0.92     S-CVI/AVE 0.81 ****    S-CVI/AVE 0.82     S-CVI/AVE 0.77    
   S-CVI/UA 0.62     S-CVI/UA 0.15     S-CVI/UA 0.08     S-CVI/UA 0.00    
  1. a I-CVI (content validity index) = number of experts providing a rating of 3 or 4/number of experts
  2. b pc (probability of chance occurrence) = [N!/A!(N-A)!] × 0.5N, N = number of experts; A = number of experts agreeing on a rating of 3 or 4
  3. c k* (modified kappa) = (I-CVI-pc)(1-pc)
  4. 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 (*)