Table 2. Calculation of I-CVI and S-CVI by two approaches of S-CVI/UA and S-CVI/Ave for items of trust building dimension.

Items	Relevant (rating 3 or 4)	Not relevant (rating 1 or 2)	I-CVIs *	Interpretation
1 2 3 4 5 6 7 8 9	14 12 13 12 11 14 12 8 14	0 2 1 2 3 0 2 6 0	1 0.857 0.928 0.857 0.785 1 0.857 0.571 1	Appropriate Appropriate Appropriate Appropriate Need for Revision Appropriate Appropriate Eliminated Appropriate

Number of items considered relevant by all the panelists=3, Number of terms=9, S-CVI/Ave^*** or Average of I-CVIs=0.872, S-CVI/UA^**=3/9=.333NOTE: ^*Item-Content Validity Items, ^**Scale-Content Validity Item/Universal agreement,^***Scale-Content Validity Item/Average Number of experts=14, Interpretation of I-CVIs: If the I-CVI is higher than 79 percent, the item will be appropriate. If it is between 70 and 79 percent, it needs revision. If it is less than 70 percent, it is eliminated.