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. 2020 Aug 6;99:312–323. doi: 10.1016/j.ijid.2020.07.074

Table 3.

The constructs and measurement items.

Construct Items Measures Supporting References
Understanding of COVID-19 U1 I do understand the transmission of COVID-19 Liu (2020); Shim et al. (2020); Nicola et al. (2020)
U2 I do understand the incubation period of COVID -19 Coccia (2020)
U3 I do understand the symptoms of COVID -19 Li et al. (2020)
U4 I do understand the protocol if I have symptoms that might lead to COVID-19
U5 I do understand which hospital can treat COVID -19 patients. Nicola et al. (2020)
Perceived Vulnerability PV1 I think I am very vulnerable to COVID -19. Díaz et al. (2016)
PV2 I think my neighborhood is very vulnerable to COVID -19. Coccia (2020)
PV3 My past experiences make me believe that I am likely to get sick when my friends are sick. Díaz et al. (2016)
PV4 I have a history of susceptibility to infectious diseases. Díaz et al. (2016)
PV5 I think there is a chance that my family will be infected by COVID -19 Nicola et al. (2020); Coccia (2020)
Perceived Severity PS1 I find COVID -19 is a serious disease. Paital et al. (2020); Basheti et al. (2020)
PS2 I find COVID -19 can lead to death. Barati et al. (2020)
PS3 I find COVID -19 is more severe than any other disease. Barati et al. (2020)
PS4 I find COVID -19 can affect mental health. Burgelt et al. (2009); Tanoue et al. (2020); Grover et al. (2020)
PS5 I think it’s very expensive to pay the medical expenses for COVID -19.
PS6 I think the COVID -19 outbreak will continue at least until the following 3 months. Cássaro and Pires (2020)
PS7 I think the COVID-19 outbreak in my country is more severe than in other countries.
Attitude AT1 I worry about the number of people infected by COVID -19. Sarkodie and Owusu (2020); Mi et al. (2020)
AT2 I feel stressed during the COVID-19 outbreak. Shader (2020)
AT3 I am afraid that one of my family members will get infected. Dariya and Nagaraju (2020)
AT4 I feel anxious during COVID -19 outbreak. Roy et al. (2020)
AT5 I feel insecure if someone stands too close to me during COVID -19 outbreak. Roy et al. (2020)
AT6 I feel insecure if someone is not wearing a mask during the COVID-19 outbreak. D’Amours (2020)
AT7 I feel insecure if someone sneezes or coughs next to me. Centers for Diseases Control and Prevention (2020)
Subjective Norm SN1 Most people I know are following the preventive protocols given by the government. Centers for Diseases Control and Prevention (2020)
SN2 Most people I know are wearing face masks outside. Conner (2020); Rubio-Romero et al. (2020)
SN3 Most people I know are staying at home and work from home. Yancey-Bragg and Bravo (2020)
SN4 Most people I know are using hand sanitizer USA Food and Drug Administration (2020)
SN5 Most people I know, are doing physical distancing. Adam (2020)
Perceived Behavioral Control PBC1 The preventive protocols are completely up to me. Sato (2018)
PBC2 I think preventive protocols are easy to be implemented. Shen et al. (2020)
PBC3 I am confident that I can prevent getting infected by COVID -19. Veldhuijzen et al. (2006)
PBC4 I am confident that I have enough knowledge about COVID -19. Barati et al. (2020)
Intention to Follow IF1 I am willing to follow the recommended precautions until the end of the COVID-19 outbreak. Barati et al. (2020)
IF2 I am willing to stay at home during COVID -19 outbreak. Sen-Crowe et al. (2020)
IF3 I am willing to follow every rule made by my government during the COVID-19 outbreak. Oyeniran and Chia (2020)
IF4 I am willing to reschedule my travel plans. Lee et al. (2020); World Health Organization (2020a; World Health Organization (2020b)
IF5 I am willing to follow my government to lock down the country, city, and community. University of Michigan School of Public Health (2020)
Actual Behavior AB1 I am practicing proper handwashing to prevent the spread of the virus. UNICEF (2020); Luo et al. (2020)
AB2 I use hand sanitizer more often during the COVID-19 outbreak. Pradhan et al. (2020)
AB3 I always wash my hands whenever I go outside. New Zealand Government (2020)
AB4 I practice 1-meter social distancing to reduce unnecessary infections. Wu and Mcgoogan (2020)
AB5 The company/school where I work/study implements work from home to prevent the spread of COVID-19. Public Health of England (2020)
AB6 I always wear a face mask whenever I go outside during the COVID-19 outbreak. Shaw et al. (2020)
AB7 I always dispose of my face mask properly. Feng et al. (2020)
Adapted Behavior AD1 I maintain a healthy lifestyle during the COVID-19 outbreak. FAO (2020)
AD2 I keep working from home during the COVID-19 outbreak. Gorlick (2020)
AD3 I don't smoke during the COVID-19 outbreak. Taghizadeh-Hesary and Akbari (2020)
AD4 I don't drink alcohol during the COVID-19 outbreak. Feuer (2020)
AD5 I sleep at least 7 h per day during the COVID-19 outbreak. Medalie (2020)
Perceived Effectiveness PE1 I think the preventive protocols for the COVID-19 outbreak in my country are effective. WHO (2020a)
PE2 I think the preventive protocols for the COVID-19 outbreak in my community are informative. WHO (2020b)
PE3 I think a healthy lifestyle will enhance my immunity. Rula (2020)
PE4 I think social distancing can prevent the transmission of COVID-19. Matrajt and Leung (2020)
PE5 I think a face mask can prevent the transmission of COVID-19. Geggel (2020)
PE6 I think proper hygiene can prevent the transmission of COVID-19. Centers for Diseases Control and Prevention (2020)
PE7 I think lockdown is an effective way to prevent COVID-19. Sasikumar (2020)