Table 5.

The values of I-CVI for each item and S-CVI/Ave for the questionnaire.

Item	I-CVI	No. of respondents
Chest distress	1.00	7
Chest pain	1.00	7
Sleepiness	1.00	7
Physical heaviness	1.00	7
Obesity	1.00	7
Sticky mouth	0.71	7
Cyanotic lips	1.00	7
Dim complexion	0.86	7
Abdominal fullness	1.00	7
Anorexia	1.00	7
Dark purple tongue	1.00	7
Petechiae or ecchymosis on the tongue	1.00	7
Sublingual vein cyanosis	1.00	7
Greasy tongue fur	1.00	7
Slippery pulse	1.00	7
S-CVI/Ave	0.97∗	7

I-CVI: item-level content validity index. ^∗: scale-level content validity index, scale-level CVI; average (scale–CVI/Ave).