Skip to main content

Table 2 Item-total correlation and internal consistency of Health Belief Model Scale for oral health behaviors

From: Development and validation of the Oral health behavior questionnaire for adolescents based on the health belief model (OHBQAHBM)

Items of subscale Mean SD Item-total correlation Cronbach’s α If item deleted (n = 421) Cronbach’s α of the subscale (n = 421) Test-retest intra-class correlation (n = 40)
Subscale of perceived susceptibility      0.81 0.82
SUS1 There is a chance that I will get caries. 2.73 1.00 0.69   
SUS2 There is a chance that I will have periodontal disease. 2.47 0.95 0.69   
Subscale of perceived benefits      0.90 0.80
BEN3 I think brushing and flossing can make teeth healthier. 4.13 0.77 0.73 0.88   
BEN5 I think brushing and flossing can prevent oral diseases from happening. 4.14 0.76 0.78 0.87   
BEN6 I think brushing and flossing can make teeth look good. 4.09 0.73 0.77 0.88   
BEN7 I think brushing and flossing can keep breath fresh. 4.02 0.81 0.72 0.88   
BEN8 I think brushing and flossing can prevent inconvenient eating caused by oral diseases. 4.11 0.78 0.66 0.89   
BEN9 I think brushing and flossing can help me avoid spending more time on dental treatment in the future. 3.81 0.84 0.66 0.89   
BEN10 I think brushing and flossing can help me avoid spending more money on dental treatment in the future. 3.78 0.91 0.62 0.89   
Subscale of perceived barriers      0.84 0.88
BAR11 I think it is difficult for me to brush twice a day. 1.83 0.92 0.47 0.83   
BAR15 I think it’s a waste of time to brush and floss. 1.99 0.90 0.59 0.81   
BAR16 I think I do not have enough time to have an annual dental visit. 2.55 1.09 0.54 0.82   
BAR17 I am afraid of undergoing tooth treatment, so I don’t have dental visits annually. 1.93 0.89 0.68 0.79   
BAR18 I think we have no money at my home, so I don’t have an annual dental visit. 1.94 0.97 0.68 0.79   
BAR19 I think the dental clinic is far from my home, so I don’t have an annual dental visit. 2.06 1.01 0.71 0.78   
Subscale pf cues to action      0.85 0.85
CUE20 Parents often reminds me of brushing and flossing 2.48 1.13 0.58 0.92   
CUE21 Classmates often reminds me of brushing and flossing. 1.87 1.02 0.79 0.72   
CUE22 Teachers often reminds me of brushing and flossing. 1.95 1.04 0.79 0.72   
Subscale of perceived severity      0.89 0.88
SEV24 If I have caries, for me that is … 3.36 1.05 0.61 0.88   
SEV25 If I have periodontal disease, for me that is … 3.86 1.02 0.71 0.87   
SEV26 If my teeth do not look good because of oral diseases, for me that is … 3.60 1.02 0.72 0.87   
SEV27 If I have bad breath because of oral diseases, for me that is … 3.80 0.98 0.79 0.86   
SEV28 If I can’t sleep well because of oral diseases, for me that is … 1.06 1.02 0.69 0.87   
SEV29 If I can’t eat my favorite food because of oral diseases, for me that is … 4.12 1.05 0.60 0.88   
SEV30 If I get laughed at by classmates because of oral diseases, for me that is … 3.82 1.07 0.64 0.88   
Subscale of self-efficacy      0.97 0.91
EFF How confident you are that you will brush your teeth for 2 min twice daily on the circumstances below?       
EFF33 When you are under a lot of stress 3.77 1.04 0.87 0.96   
EFF34 During or after experiencing personal problems 3.74 1.08 0.88 0.96   
EFF35 When you are feeling tired 3.44 1.15 0.80 0.97   
EFF36 When you don’t feel like it 3.35 1.20 0.79 0.97   
EFF37 When you are anxious 3.78 1.05 0.91 0.96   
EFF38 After experiencing family problems 3.72 1.11 0.88 0.96   
EFF39 When you have other commitments 3.71 1.08 0.87 0.96   
EFF40 When you feel you don’t have
the time
3.49 1.18 0.84 0.97   
EFF41 When you are feeling under pressure from school work 3.69 1.16 0.84 0.97   
EFF42 When you have too much work to do at home 3.80 1.05 0.86 0.96   
\