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Table 1 Measures of the items used to build the TPB constructs

From: Exploring motivations behind pollution-mask use in a sample of young adults in urban China

Construct

Measures

Factor loadings

Intention alpha = 0.94

If the AQI is higher than 200 and if I have to stay outdoor for more than 1 hour consecutively…

 I expect to wear a pollution mask

0.87

 I want to wear a pollution mask

0.87

 I intend to wear a pollution mask

0.92

 I choose to wear

0.90

 I will wear a pollution mask

0.88

 I would be better wearing a pollution mask

0.72

 I prefer wearing a pollution mask

0.85

Attitude Alpha = 0.76

Wearing a pollution mask is…

 Necessary

0.83

 Effective

0.87

 Beneficial

0.76

 Useful

0.57

Social Norm Alpha = 0.80

Do you think that the following individual or groups would approve or disapprove that you wear a pollution mask…?

 My parents

0.70

 My friends

0.84

 My schoolmates

0.79

 My roommates

0.81

Perceived Behavioural Control (PBC) Alpha = 0.80

How likely are you going to face the following situations if you wear a pollution mask during a day with AQI higher than 200 if I have to stay outdoor for more than 1 h?

 I will find a shop where to buy a pollution masks

0.84

 I can find high-quality pollution masks

0.90

 I will be recommended a specific mask brand

0.80