Table 4.

Standardised Cronbach’s alpha, item-total correlation and alpha with deleted items

Performance	Corrected item- total correlation values	Alpha if item deleted
Eating	0.56	0.67
Understandable speaking	0.47	0.68
Cleaning mouth	0.49	0.68
Relaxing	0.45	0.69
Smiling	0.39	0.70
Emotional status	0.37	0.70
Studying	0.34	0.71
Contact with people	0.31	0.72