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This study aimed to identify the quality consumers expect from functional food. This study investigated the quality dimensions and indicators female consumers expect in functional food.

This study used a quantitative approach. Data were collected through a survey using a self-administered questionnaire from 149 women aged 17 years and over in the Greater Jakarta area. Data analysis consists of three stages: exploratory factor analysis (EFA), confirmatory factor analysis-structural equation modeling (CFA-SEM) and consumer expectation value analysis. Statistical Package for the Social Sciences (SPSS) and Lisrel software were used to assist the analysis.

The analysis results showed that women expect functional food products to fulfill the aspects of product presentation, product assurance, convenience, health benefits and safety and sensory characteristics. These five aspects are referred to as the expected quality dimensions. Twenty-one indicators can be used to measure the quality of functional food expected by women.

Other researchers can use this study to understand functional food female consumers' behavior. Furthermore, functional food companies can utilize it to measure consumers' expectations of their products' quality and performance.

This research is believed to be the first study to identify the dimensions of functional food quality expected by female consumers. Most existing research on the perceived quality of functional food measures functional food quality based on performance and ignored the differences in expectations between men and women.

This research investigates factors affecting the intention to sort waste. Specifically, this research aims to develop a waste-sorting intention model by extending the theory of planned behavior (TPB) model and to test the model to ensure the model's goodness-of-fit, validity and reliability.

This research used a quantitative research methodology. Data were collected from 460 respondents using an online questionnaire. Some statistical analyses were performed to analyze the data: descriptive statistics, factor analysis, confirmatory factor analysis-structural equation modeling (CFA-SEM), SEM and Cronbach's alpha analysis.

The result shows that the intention to sort waste was directly affected by attitude, subjective norms, perceived behavioral control (PBC), moral obligation and facility support. Environmental concerns, waste-sorting knowledge and time availability indirectly influenced the intention to sort waste. The testing indicated that the proposed model was fit, valid and reliable.

The model provides a more comprehensive understanding of waste-sorting intention. The central and local governments can use the results to encourage waste-sorting intention in the community.

This research is believed to be the first study to develop and test the waste-sorting intention model that extends the TPB model by incorporating moral obligation, facility support, policy and regulation support, environmental concerns, waste-sorting knowledge and time availability into the traditional TPB model.

This study aims to identify the development, trends and research gaps related to start-ups during the COVID-19 pandemic. Furthermore, this research identified future research directions.

This research is a bibliometric study using 192 Scopus-indexed articles with the assistance of the VOSviewer. The selected articles discussed start-ups during the COVID-19 pandemic and were published between 2020 and 2022. The analyses included initial statistics on publication trend, distribution of research field, most productive journals, most productive authors, most cited article, geographic distribution, multinational collaboration and science.

Between 2020 and 2022, the literature on start-ups during the COVID-19 pandemic has increased. Most articles are in Business, Management and Accounting, Economics, Econometrics and Finance and Social Sciences. Regarding geographic distribution and multinational collaboration, the USA, India and the UK led the numbers. The UK was also the forerunner in research collaboration. Based on the science mapping results, COVID-19, fintech, entrepreneurship and innovation were the most simultaneously used keywords. Furthermore, this study also identified that there is a lack of study regarding consumer behavior, employee behavior and quality management of start-ups during the COVID-19 pandemic.

This research also has several limitations. First, this research only used the Scopus database. Even though Scopus has advantages compared to other databases, combining the Scopus database with other databases will be able to provide more comprehensive data. However, there is a risk associated with combining two or more databases, namely, duplication. When using more than one database, researchers must ensure no repetition of the articles used because it will affect the analysis results. Future research can consider combining the Scopus database with other databases. Second, this bibliometric study covered the publication of start-ups during the COVID-19 pandemic. The COVID-19 pandemic is still ongoing. This condition indicated that several research on start-ups during COVID-19 are still being performed and will be published. Thus, future bibliometric study start-ups during COVID-19 were needed to update the trend of the research on start-ups during COVID-19.

The bibliometric study provided at least two main practical implications that can be used to support the growth of start-ups during the COVID-19 pandemic. First, this research has mapped the existing literature on start-ups during the COVID-19 pandemic. This information can be used as input for start-up practitioners and policymakers when they need scientific reference and evidence in developing a policy and/or a management action/program needed during the COVID-19 pandemic. Second, this research highlighted several clusters of keywords that are attracted many researchers. These keywords can be viewed as important issues that are needed to be monitored by start-up practitioners and policymakers during the COVID-19 pandemic.

Start-ups have an important role in economic development. It is well known that start-ups can boost productivity and economic growth. As start-ups tend to use technology, it also has an important role in disrupting traditional economic practices. Start-ups may also offer a more convenient life. Furthermore, the availability of start-ups may also increase the quality of life of the people that are serviced by the start-ups.

To the best of the authors’ knowledge, this is the first bibliometric study that discussed start-ups during the pandemic. It provided a comprehensive literature review process to identify research gaps that allowed future researchers to develop studies related to start-ups.

This research seeks to develop a model to predict repurchase intention based on the modified theory of planned behavior (TPB).

This research is quantitative study involving 150 respondents from five major cities in Indonesia. Data were collected using a questionnaire. Data analysis used confirmatory factor analysis–structural equation modeling (CFA–SEM).

The research instrument and the proposed model were fit. However, health belief was not proven to have a significant impact on attitude. The perceived behavioral control (PBC) also did not significantly affect repurchase intention.

Future research that utilizes TPB should incorporate emotional belief as part of the attitude variable.

In the designing and marketing process, managers of herbal teas companies should consider the health benefits of their products and the feeling of joy it might incite.

The TPB was initially constructed from three variables: subjective norm, attitude and perceived behavioral control (PBC). Unlike previous research, this study considered cognitive and emotional beliefs as the factors that affected attitude.

This research aims to test the effects of attitude, perceived behavioral control (PBC), subjective norm and perceived quality of official coronavirus disease 2019 (COVID-19) websites on intention to use official COVID-19 websites.

This study collected data using an online questionnaire. It involved 120 Indonesians who used official COVID-19 websites. The data were analyzed using the multiple regression analysis.

This research found that intention to use official COVID-19 websites is significantly and positively affected by the quality of the website, attitude and subjective norm. PBC does not influence intention to use official COVID-19 websites.

This research was only conducted in the context of Indonesians. Furthermore, a convenience sampling technique was applied. Future research should be done in a different context with larger samples to test the generalization of this research's findings.

To improve intention to use official COVID-19 websites, people must be directed to have a positive attitude toward the website. The developer must ensure the quality of the website. It is also essential to involve leaders and public figures whose opinions might be able to sway citizens to use official COVID-19 websites consistently.

This research is the first one of its kind that studied citizens' intention to use official COVID-19 websites.

This research seeks to simultaneously test the effect of attitude towards the behavior of following the “Stay at Home” policy, subjective norm, perceived behavioral control, perceived susceptibility and perceived severity on people's intention to follow the “Stay at Home” policy during COVID-19 pandemic.

The data were collected through an online survey with 148 respondents in the Greater Area of Jakarta, Indonesia. The data were then analyzed using multiple regressions.

The findings show that attitude towards the behavior, subjective norm and perceived behavioral control positively and significantly affect intention to follow “Stay at Home” during the COVID-19 pandemic. However, perceived susceptibility and perceived severity of COVID-19 do not significantly influence the intention to follow “Stay at Home” during the COVID-19 pandemic.

This research was limited to the Greater Area of Jakarta, Indonesia. Furthermore, sampling was done through convenience sampling. Therefore, future research should be conducted in a different context to test the generalization of this research's findings.

To encourage citizens' adherence to the stay-at-home policy during the COVID-19 pandemic, they must be directed to have positive attitudes toward the policy. Financial and non-financial supports are critical to ensure citizens' ability to sufficiently observe the policy sufficiently. Another important aspect is the influence of leaders and public figures to consistently call for obedience consistently.

This is the first research that studies citizens' behavior related to the “Stay at Home” policy requisitioned by the government to hinder the spread of COVID-19.

This research aims to investigate the simultaneous effect of trust, subjective norm, image and perceived risk on patient loyalty.

This research used quantitative research methodology. The authors surveyed the patient of a healthcare service institution in Depok, Indonesia, and 163 of the institution patients participated in the survey. Multiple regressions analysis was performed to analyze the empirical data.

The findings showed that subjective norm and image have positive influence on patient loyalty. However, this research also found that trust and perceived risk do not have significant impact on patient loyalty.

The author(s) used convenience sampling method, and the sample only involved respondents from a healthcare service institution in Depok, Indonesia. Hence, the findings of this research may not be generalized to the other contexts. Therefore, we recommend further research to replicate this research to examine the stability of this research’s findings.

The research results show that subjective norm and image affect the patient loyalty. Thus, the management of healthcare service institution should consider and manage all of these factors proactively.

This study is believed to be the first to develop and test patient loyalty model that includes trust, subjective norm, image, perceived risk and trust.

The purpose of this paper is to investigate the simultaneous effect of perceived value, image, perceived ease of use and perceived usefulness on passengers’ satisfaction.

The empirical data were collected through survey. The respondents of the survey are 292 public transport passengers in Jakarta, Indonesia. Multiple regressions analysis was performed to test the conceptual model and the proposed hypotheses.

The findings showed that public transport passengers’ satisfaction is influenced by perceived value, perceived usefulness and image while perceived ease of use does not affect public transport passengers’ satisfaction.

The authors performed the survey only at Jakarta using convenience sampling method. Hence, the research results may not be generalized to other contexts. Given this, in order to test the stability of the findings in other contexts, a replication research is important to be performed in the future.

Public transport service managers need to pay attention to perceived value, perceived usefulness and image in order to ensure public transport passengers’ satisfaction.

This study is believed to be the first to develop and test public transport passengers’ satisfaction model that integrated perceived value, image, perceived ease of use and perceived usefulness.

The purpose of this paper is to investigate the simultaneous effect of attitude, subjective norm, perceived behavioral control (PBC), perceived value, and image on public transport passengers’ intention to reuse.

The empirical data were collected through survey. The respondents of the survey are 293 public transport passengers in Tangerang, Indonesia. Multiple regressions analysis was performed to test the conceptual model and the proposed hypotheses.

The findings showed that attitude, subjective norm, and image influence public transport passengers’ intention to reuse. However, this research also found that perceived value and PBC does not influence public transport passengers’ intention to reuse significantly.

The survey was only conducted at one area in Indonesia. In addition, convenience sampling method was employed. These conditions may cause that the research results cannot be generalized to the other contexts. Therefore, replication research is needed to test the stability of the findings in the other contexts.

Public transport service managers need to pay attention to attitude, subjective norm, and image in order to ensure public transport passengers’ intention to reuse public transport services.

This study is believed to be the first to develop and test public transport passengers’ intention to reuse model that integrated theory of planned behavior with perceived value and image.

This study aims to investigate the simultaneous effect of subjective norm, perceived behavioral control and trust on patient loyalty.

The empirical data were collected through survey. The respondents of the survey are 157 patients of a health-care service institution in Bogor, Indonesia. Multiple regressions analysis was performed to test the conceptual model and the proposed hypotheses.

The findings showed that subjective norm and trust influence patient loyalty positively. However, this research also found that perceived behavioral control does not influence patient loyalty significantly.

The survey was only conducted at one health-care service institution in Bogor, Indonesia. In addition, convenience sampling method was used. These conditions may cause that the research results can not be generalized to the other contexts. Therefore, replication research is needed to test the stability of the findings in the other contexts.

Health-care service institutions need to pay attention to trust and subjective norm to establish patient loyalty.

This study is believed to be the first to develop and test patient loyalty model that includes subjective norm, perceived behavioral control and trust.