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versión impresa ISSN 0036-3634
Salud pública Méx vol.54 no.3 Cuernavaca may./jun. 2012
Evaluación económica sobre las ventas del sector gastronómico después de una ley de ambientes 100% libres de humo en una provincia argentina
Carlos Candioti, MDI; Gustavo Rossini, PhDII; Edith Depetris de Guiguet, PhDII; Oscar Costa, CPAII; Verónica Schoj, MDII, III
IAliar Argentina (SmokeFree Alliance of Argentina). Argentina
IIUniversidad del Litoral. Santa Fe, Argentina
IIIFundación InterAmericana del Corazón. Argentina
OBJECTIVES: To assess the economic impact of a 100% smoke-free law on bars and restaurants in an Argentinean province.
MATERIALS AND METHODS: We conducted a time series analysis of restaurant and bar revenues in the province of Santa Fe 31 months before and 29 months after the implementation of the 100% smokefree environment law. The neighboring province of Entre Rios without smoking restrictions at the time of this study, was used as the control province.
RESULTS: Average taxable revenues post-legislation in the province of Santa Fe as a whole and in the two most important cities were higher when compared to the total provincial revenue pre-legislation. No significant differences were observed with the total revenue from the province of Entre Rios.
CONCLUSIONS: We found no statistically significant evidence that the 100% smoke-free environment legislation in the province of Santa Fe, Argentina, had a negative impact on the revenues of local bars and restaurants.
Keywords: economics; public policy; tobacco smoke pollution
OBJETIVOS: Evaluar el impacto económico de una ley de ambientes 100% libres de humo de tabaco sobre las ventas de bares y restaurantes en una provincia argentina.
MATERIAL y MÉTODOS: Se realizó un análisis de serie temporal sobre las ventas de bares y restaurantes en Santa Fe, 31 meses antes y 29 meses después de la ley. Se utilizó a la provincia vecina de Entre Ríos, sin ley en el momento del estudio, como provincia control.
RESULTADOS: El promedio de ventas post-ley tanto en la provincia de Santa Fe como en sus dos ciudades más importantes fue mayor al compararse con el promedio provincial total pre-ley. No se observaron diferencias significativas en las ventas totales al ser comparadas con la provincia de Entre Ríos.
CONCLUSIONES: No se demostró evidencia estadísticamente significativa sobre el impacto negativo de la legislación de ambientes 100% libres de humo sobre las ventas de bares y restaurantes en la provincia de Santa Fe.
Palabras clave: economía; políticas públicas; contaminación por humo de tabaco
The Framework Convention on Tobacco Control (FCTC) is the world's first international public health treaty adopted by the World Health Assembly. Article 8 addresses second hand-smoke exposure (SHS) as a health risk and identifies interventions to reduce such exposure.1 The FCTC calls for ratifying parties to implement clean indoor air laws to protect citizens from SHS. Argentina signed the treaty but as of March 2012 has still not ratified this treaty.2 In June 2011, Argentina enacted a tobacco control national law.3 However, before the introduction of this law, tobacco control initiatives were undertaken at the local level including provinces and cities.
Santa Fe was the first province to introduce comprehensive smoking prevention and tobacco control legislation.4,5 The 100% smoke-free law was fully enforced and implemented by the end of August, 2006. The main provisions of the legislation included the implementation of 100% smoke-free environments, the complete ban on tobacco advertising, promotion and sponsorship within the province, and the organization of education campaigns. Evidence of high compliance in the province has been shown in different local studies. A survey conducted simultaneously to this economic study to bar and restaurant owners in 473 venues from the two most important cities of the province of Santa Fe, showed that 98.8% in Rosario and 93.7% in Santa Fe reported having implemented 100% smokefree environments in their own venues. At the moment of the conduction of this survey we observed people smoking in 2.3% venues from Rosario and 4.1% venues from the city of Santa Fe. This study which also includes other relevant compliance and perception variables from bar and restaurant owners will be published as a separate article. Also, a locally conducted air quality study performed in 2007 that evaluated suspended air particles using the Sidepak monitor showed that from 56 venues in the cities of Rosario and Santa Fe had average PM levels of 49.79 which are within the expected air quality EPA standards.6 In the observation included in this air quality monitoring study we found people smoking in only three venues observed after the implementation of the law.4,7
As it has been widely shown, the tobacco industry and its "front groups" have always claimed that smokefree legislation would result in severe economic losses in the "5 B's" group: bars, bowling alleys, billiard halls, betting establishments and bingo halls.8 However, most studies conducted worldwide have demonstrated that 100% smoke-free environments do not have a negative impact on these revenues.9-12
The objective of our study was to assess the long term economic impact of the 100% smoke-free legislation on bar and restaurant revenues in the province of Santa Fe, Argentina.
Materials and methods
We conducted a time series analysis of restaurant and bar revenues in the province of Santa Fe from 31 months before and 29 months after the implementation of the new legislation. We also performed a taxable revenue comparison with the province of Entre Rios. Entre Rios was a good control province for the province of Santa Fe because it is a neighboring province with similar weather, cultural, ethnic and geographic conditions. Although the population size is different (Santa Fe has 3 200 736 and Entre Rios 1 236 300 inhabitants)13 both provinces are largely urban (89.2% of the population from Santa Fe and 82.5% of the population from Entre Rios live in cities and towns).14 Also, according to the National Survey of Risk Factors conducted in 2005, smoking prevalence is also similar in both provinces: 31.8% of the population between 14 and 64 years of age smoke in Santa Fe vs. 31.7% in Entre Rios.15 Furthermore, the annual growth rate for the gross state product (GSP) for the 2002-2006 period was 7.7% for Santa Fe and 7.0% for Entre Rios. The main economic activities in both provinces are agriculture, farming and other business and manufacturing activities. The share of the bars, restaurants and hotels in the GDP of both provinces is similarly low with an average of 0.79% in Santa Fe and 1.56% Entre Rios for bars, restaurants and hotels for the 1993-2008 period.16-18
Taxable revenues are defined as the amount declared by bars and restaurants to the Provincial Revenue Service. This value was then divided by the total number of venues in order to obtain average revenue. The result of this division was used in the data analysis. To assess methodological quality of our study we used Siegel's criteria.19
We included monthly taxable revenues from bars and restaurants obtained from the Department of Statistics and Technical Studies of the Provincial Revenue Service (API) for the province of Santa Fe and the General Revenue Office (DGR) for the province of Entre Rios. Data obtained from API included data from the city of Rosario, the city of Santa Fe and the total provincial taxable revenue. The city of Santa Fe is the capital city of the province of Santa Fe (about 400 000 inhabitants) and Rosario is the most populated city with 1 198 528 inhabitants, both cities covering 49.87% of the total provincial population.13 Monthly taxable revenue listings were obtained from a section within API's BusinessActivity Code that included all Food and Beverage Retail Services. These services are included in item H, "Hotel and Restaurant Services", of the same code. Within this item the following services are included: a) sale of food and beverages in restaurants and clubs (code 552111), b) sale of food and beverages in bars, coffee shops, and pizzerias (code 552112), c) beverage sale (code 552113), d) food and beverage sale at milk bars (code 552114), e) food and beverage sale at patisseries and similar venues without shows (code 552115), f) food and beverages sales at teashops (code 552116), g) food and beverage sale at venues that sale food and beverages (code 552119), h) icecream sale (code 552120), i) catering services (code 552210), and j) elaboration and sale of takeout food (code 552290). Data from the DGR only included the total provincial revenue. Data provided by both agencies included monthly taxable revenue listings from January 2003 to December 2007.
For the objective outcome measure, we used two methodological approaches: multiple regression model and intervention analysis. Both methods are used to examine the effect of smoke-free legislation on average bar and restaurant revenues and to compare the consistency of the results.
Four regressions were estimated. The first three use the value of taxable revenues as the dependent variable. If the new legislation negatively affected bar and restaurant businesses, revenues would be expected to decline as soon as the new legislation entered into force. In the second regression model, we used a ratio only for bar and restaurant revenues for the provinces of Santa Fe and Entre Rios. Again, if the legislation adversely affected bar and restaurant sales, this ratio would be expected to fall.
The following independent variables were considered: 1) average wages (S); 2) seasonal variation(E); 3) gas consumption in Santa Fe (G); 4) 100% smokefree environment law (L). The wage variable is used to analyze the effect of the economic activity on taxable revenues. The inclusion of monthly binary variables has been tested to model the effect of seasonal factors but many of them are not statistically significant. Thus, we have included quarterly binary variables. Winter includes June, July and August; Spring includes September, October and November. Summer includes December, January and February and Fall includes March, April and May. The variable corresponding to the consumption of gas makes it possible to include the economic changes that are not considered in the wage variable. Last, a binary variable includes the periods that allow for the quantification of the effect of the law on the taxable revenues of bars and restaurants. Average bar and restaurant revenues and wages were adjusted for inflation using the consumer price index published by the Statistical Institute of Santa Fe. The estimated regression model was as follows:
log(I)= β0+ β1L+ β2log(S)+ΣβiEi+βlog(G)+µ
Where I is the value of the monthly taxable revenues for all bars and restaurants from the three datasets (city of Santa Fe, city of Rosario and Province of Santa Fe) or the ratio of the monthly taxable revenues in Santa Fe versus the monthly sales in Entre Rios. Taxable revenues, wages and gas consumption are expressed in logarithmic form. B0 to B6 are parameters of the equation to be estimated.
The Breusch-Pagan test for heteroskedasticity and the Durbin-Watson test for autocorrelation were used to evaluate the suitability of the model.
The Intervention Analysis was also used to determine the impact of the 100% smoke-free legislation on bar and restaurant taxable revenues. The AutoRegressive Moving Average Model (ARMA) may be expressed as follows:
Where I is the value of the monthly taxable revenues for all bars and restaurants, A(L) and B(L) are polynomials, L is the "lag" operator and z the intervention variable (binary). In our study, the value of the intervention variable changes from 0 to 1 which is commonly referred to as "pure jump" process.
The initial or immediate effect of the new legislation is shown by the magnitude of the c0 coefficient. Statistical significance was assessed with a standard t-test to show whether or not the implementation of the smoke-free environment law had a negative impact on bar and restaurant revenues. Variables were first tested to determine the presence of unit roots. Only in the case of the city of Rosario we could not reject the presence of unit root. Thus, the model was estimated with differences for this city.
Monthly taxable revenues in the cities of Santa Fe and Rosario and for the Province of Santa Fe did not decline in the two most important cities and in the province of Santa Fe after the implementation of the 100% smokefree legislation (table I).
Figure 1 shows bar and restaurant taxable revenues during the study period in the province of Santa Fe. The series shows that taxable rates did not decline after the implementation of the 100% smoke-free legislation. Although they showed some variations, the linear trend estimation shows a higher value in average bar and restaurant taxable revenues post-legislation.
Table II shows the results of the estimated multiple linear regression models. In regressions 1, 2, and 3 the dependent variable corresponds to taxable revenues per bar and restaurant; in regression 4 the dependent variable is the ratio of the average taxable revenues comparing the province of Santa Fe with the province of Entre Ríos. Independent variables included in the analysis are: Implementation of the law, wages (estimated in Argentinean pesos), seasonal variation and gas consumption.
The variable of most interest shows the effect of the implementation of the smoke-free legislation on the taxable revenues of bars and restaurants. In the first model, results show that the effect of the law in the province of Santa Fe is -0.0232 showing a 2.32% reduction on the taxable revenues. However, this effect is not statistically significant after controlling for other economic and seasonal variables in the model. In the second and third regression model, results from the cities of Santa Fe and Rosario are similar. The effect of the law shows a 4.67% and 0.84% reduction with no statistical significance. In the case of the regression model using a ratio as dependent variable where we compared bar and restaurant taxable revenues in one province (Santa Fe) with legislation versus one province (Entre Ríos) without legislation, results show a 0.52% positive effect in Santa Fe post-legislation. However, this result is not a statistically significant difference which indicates that the implementation of the law had no impact on bars and restaurants revenues in Santa Fe as compared with Entre Ríos.
Variables were first tested to determine the presence of unit roots. Only in the case of the city of Rosario we could not reject the presence of unit root (Table III). Therefore, for the first two series we included an ARMA model for the city of Santa Fe and the province of Santa Fe and an ARIMA model for the city of Rosario. Best-fit models including lagged dependent variables are shown in Table III. In the intervention analysis, the coefficient of the "Implementation of the law" variable shows that the new law had no negative economic impact on bar and restaurant taxable revenues. In fact, some coefficients showed positive results.
Our study shows no evidence of bar and restaurant taxable revenue decline after the implementation of the 100% smokefree legislation in the Province of Santa Fe and in its two main cities (Rosario and Santa Fe). Also, when taxable revenues were compared with the province of Entre Rios, the multivariate regression model adjusted to all the variables did not show statistically significant differences in the taxable revenues of bars and restaurants before and after the law in both provinces.
One of the strengths of our study is that it includes a 60-month time series analysis covering 31 months before and 29 months after the implementation of the law in Santa Fe which is a considerable time to adjust with different measures -seasonal variations, economic growth, and wages thus strengthening our results. Furthermore, our study was performed using an independent data source. However, this study is subject to some limitations. We did not have access to information on revenues for each specific bar and restaurant and we did include individual variables in our analysis. This may not represent the actual situation of each bar and restaurant. Also, data from this study has been useful in the province of Santa Fe but other provinces would have benefited from a local analysis as they have different economic structures. Last, the province of Entre Rios that was used as the comparison group for the province of Santa Fe is not the best comparison group as it has a lower Gross Provincial Product, less population density and different economic activities.
Our results are consistent with those from other international studies9,12,20,* that followed Siegel's criteria and did not have conflicts of interest with tobacco industry involvement or funding. A recent economic evaluation performed in Mexico city also showed that the implementation of the smokefree law had no negative impact on restaurants' income, employees' wages and levels of employment.21
Progress has been achieved in the implementation of 100% smokefree legislation with the inclusion of bars and restaurants in Latin America and the Caribbean during the last years: Uruguay (2006), Panama (2008), Guatemala (2009), Colombia (2009), Peru (2010), Trinidad & Tobago (2010), Honduras (2010), Barbados (2010),22 and Venezuela (2011). Also, the most populated cities in the region have introduced this type of legislation: Rio de Janeiro and Sao Paolo (Brazil), Mexico City (Mexico), City of Buenos Aires (Argentina).23 However, several countries have introduced legislation that allows the implementation of designated smoking areas (DSAs) in the hospitality sector during the time period: Nicaragua (2010), Bolivia (2009), Ecuador (2008), Mexico (2008), Chile (2006).22 The main argument to implement DSAs has been the economic losses imposed by this type of legislation to the hospitality sector. This shows that the tobacco industry arguments have remained a powerful rhetoric in tipping the scales in favor of their business.24 Thus, our study and the study performed in Mexico City22 are crucial to counteract the interference of the tobacco industry in the legislative process of the Latin American and the Caribbean region.
In Argentina, as in other Latin American countries, the myth of profits loss has been a very strong argument of the tobacco industry turning the hospitality sector into its main lobbying group.24 Although these arguments have been proved to be ineffective even by the same tobacco industry,25 hospitality establishments were the priority for Philip Morris' Courtesy of Choice programme which penetrated in the hospitality sector of the entire region.8 Between the years 2004 and 2008 the hospitality sector was the main group to lobby against this 100% smokefree environment legislation arguing economic losses in their business. These arguments were effective to introduce legislation consistent with the tobacco industry's interests. In October 2005, the city of Buenos Aires and in October 2008 the province of Buenos Aires both introduced legislation that allowed the implementation of DSAs.26-28 These cases are among the most significant examples of tobacco industry interference and the success of their arguments.
However, the position of the hospitality sector has been changing in our country. In fact, generating local evidence made it possible to strengthen the relationship of health organizations with the hospitality sector that even in the province of Santa Fe recognized the lack of economic losses after the new law. This study was useful to facilitate the enactment of 100% smokefree environment legislation in other Argentinean provinces during the last years, including the modification of the law in the city of Buenos Aires which eliminated DSAs23 in bars and restaurants, the provinces of Entre Rios (2009), Santiago del Estero (2009), and San Luis (2010). In these provinces bar and restaurant owners were not obstructive but supportive of the new law.
The dissemination of our results and the use of this study as an advocacy tool nationwide have been key factors to promote 100% smokefree environment legislation and especially to obtain the support of the hospitality sector thus forcing the tobacco industry to look for other allies to hinder tobacco control policies such as retailers and owners of gambling establishments.
We thank Lorena Allemandi, from Fundación Inter-Americana del Corazón-Argentina, for the elaboration andAndrew Hyland, PhD from the Roswell Park Cancer Institute, for the review of this manuscript.
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Fundación InterAmericana del Corazón Argentina
Scalabrini Ortiz 2470 4 H
CABA 1425 - Argentina
Received on: November 10, 2011
Accepted on: March 12, 2012
Declaration of conflict of interests: The authors declare not to have conflict of interests.
* Ramos A, Curti D. Evaluacion economica del impacto de la medida de 100% libre de humo de tabaco sobre el sector de la hosteleria en Uruguay: 2003. Documento no publicado.