Evolution of market shares with repeated purchases and heterogeneous network externalities

Janssen, Maarten; Mendys-Kamphorst, Ewa

doi:10.1007/s00191-007-0065-5

Cited by 10 publications

(3 citation statements)

References 15 publications

(27 reference statements)

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“…Vouchers, for instance, limit the bearer to a specific set of goods and services at a fixed reimbursement amount (Steuerle 2000; Janssen et al . 2004).…”

Section: Introductionmentioning

confidence: 99%

Community-level impact of the reproductive health vouchers programme on service utilization in Kenya

Obare

Warren

Njuki

et al. 2012

Health Policy and Planning

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This paper examines community-level association between exposure to the reproductive health vouchers programme in Kenya and utilization of services. The data are from a household survey conducted among 2527 women (15–49 years) from voucher and comparable non-voucher sites. Analysis entails cross-tabulations with Chi-square tests and significant tests of proportions as well as estimation of multi-level logit models to predict service utilization by exposure to the programme. The results show that for births occurring after the voucher programme began, women from communities that had been exposed to the programme since 2006 were significantly more likely to have delivered at a health facility and to have received skilled care during delivery compared with those from communities that had not been exposed to the programme at all. There were, however, no significant differences in the timing of first trimester utilization of antenatal care (ANC) and making four or more ANC visits by exposure to the programme. In addition, poor women were significantly less likely to have used safe motherhood services (health facility delivery, skilled delivery care and postnatal care) compared with their non-poor counterparts regardless of exposure to the programme. Nonetheless, a significantly higher proportion of poor women from communities that had been exposed to the programme since 2006 used the services compared with their poor counterparts from communities that had not been exposed to the programme at all. The findings suggest that the programme is associated with increased health facility deliveries and skilled delivery care especially among poor women. However, it has had limited community-level impact on the first trimester timing of antenatal care use and making four or more visits, which remain a challenge despite the high proportion of women in the country that make at least one antenatal care visit during pregnancy.

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“…Vouchers, for instance, limit the bearer to a specific set of goods and services at a fixed reimbursement amount (Steuerle 2000; Janssen et al . 2004).…”

Section: Introductionmentioning

confidence: 99%

Community-level impact of the reproductive health vouchers programme on service utilization in Kenya

Obare

Warren

Njuki

et al. 2012

Health Policy and Planning

View full text Add to dashboard Cite

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“…The weaknesses of such interventions in increasing uptake of health facility services have led to increased interest in and experimentation with demand-side mechanisms that place purchasing power in the hands of targeted consumers to spend on specific services at accredited facilities, thereby increasing access and encouraging quality improvement. Examples of demand-side financing mechanisms that are being explored include output-based aid (OBA) vouchers and social health insurance programmes (Gorter et al 2003; Janssen et al 2004; Borghi et al 2006; Bhatia and Gorter 2007; Lagomarsino et al 2012; Moreno-Serra and Smith 2012). …”

Section: Introductionmentioning

confidence: 99%

Safe motherhood voucher programme coverage of health facility deliveries among poor women in South-western Uganda

Kanya

Obare

Warren

et al. 2013

Health Policy and Planning

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There has been increased interest in and experimentation with demand-side mechanisms such as the use of vouchers that place purchasing power in the hands of targeted consumers to improve the uptake of healthcare services in low-income settings. A key measure of the success of such interventions is the extent to which the programmes have succeeded in reaching the target populations. This article estimates the coverage of facility deliveries by a maternal health voucher programme in South-western Uganda and examines whether such coverage is correlated with district-level characteristics such as poverty density and the number of contracted facilities. Analysis entails estimating the voucher coverage of health facility deliveries among the general population and poor population (PP) using programme data for 2010, which was the most complete calendar year of implementation of the Uganda safe motherhood (SM) voucher programme. The results show that: (1) the programme paid for 38% of estimated deliveries among the PP in the targeted districts, (2) there was a significant negative correlation between the poverty density in a district and proportions of births to poor women that were covered by the programme and (3) improving coverage of health facility deliveries for poor women is dependent upon increasing the sales and redemption rates. The findings suggest that to the extent that the programme stimulated demand for SM services by new users, it has the potential of increasing facility-based births among poor women in the region. In addition, the significant negative correlation between the poverty density and the proportions of facility-based births to poor women that are covered by the voucher programme suggests that there is need to increase both voucher sales and the rate of redemption to improve coverage in districts with high levels of poverty.

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“…Therefore, more and more scholars pay attention to how enterprises get the best profit and gain competitive advantage from the market with network externality. The research shows that the use of network externalities through compatibility strategy enables enterprises to gain more market share (Katz and Shapiro,1985); under the network externality, enterprises can attract more consumers and make more profits through pricing strategy (Cabral and Salant,1999;Cabral,2011;Jullien,2001), and the influence of consumers' demand for products or services and the transfer of market share (Mitchell,2006;Janssen and Mendys, 2007). Yi and Yang (2017) believes that in a market environment of network externalities, retailers must consider changes in market demand caused by network externalities and make corresponding decisions about these changes, such as decisions to adjust prices and order quantities, and ways to maximize profits or market share maximization in order to achieve profits.…”

Section: Literature Reviewmentioning

confidence: 99%

Evolutionary Game Analysis of Online and Offline Drug Retailer Competition Based on Network Externalities

Zhe

2019

IEEE Access

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Network externality is an important feature of the era of network economy. The competition between online and offline retail pharmacies caused by network externality is getting fiercer and fiercer. In this context, we studied the long-term market competition evolution of two-channel retail pharmacies under the network external environment, in order to obtain higher profits, two-channel retail pharmacies prefer to choose profit maximization marketing strategy or market share maximization marketing strategy. Using evolutionary game theory, an evolutionary game model of two-channel retail pharmacies was established. Through the establishment of the model, obtain the payment matrix of different marketing strategies selected by the two-channel retail pharmacies and the evolution and stability of the selection of marketing strategies. The results show that when the strength of the network externality is within a certain range, the traditional retail pharmacies with higher marketing cost choose to pursue the profit maximization strategy, while online pharmacy with lower marketing costs choose market share maximization strategy to achieve greater profits; when the network externality is large, in order to maintain a certain market share in the long-term market evolution, the traditional retail pharmacy with high marketing cost chooses to pursue the market share maximization marketing strategy in order to obtain greater profits, while the online pharmacy with low marketing cost chooses to profit from the profit maximization marketing strategy.

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Evolution of market shares with repeated purchases and heterogeneous network externalities

Cited by 10 publications

References 15 publications

Community-level impact of the reproductive health vouchers programme on service utilization in Kenya

Community-level impact of the reproductive health vouchers programme on service utilization in Kenya

Safe motherhood voucher programme coverage of health facility deliveries among poor women in South-western Uganda

Evolutionary Game Analysis of Online and Offline Drug Retailer Competition Based on Network Externalities

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