Table 2.
Content validity results: comments by experts and changes made
| Reactive | CVI | Expert comment | Improvement by the team |
|---|---|---|---|
| 1.- Was the street food outlet previously evaluated? | 1 | This question is insufficient; the outlet can be evaluated twice. An identification method is necessary. | The manual includes instructions for interviewing the vendor. At the end of the tool application, the vendor was given an identification stamp. |
| 2.- Days of operation | 1 | Specify if there are changes on holidays. | A check box was added to indicate whether the day on which the evaluation is being taken is a holiday. |
| 3.- Type of street food outlet | 0·8 | Explain the manual’s definition and characteristics of each street food outlet classification. | The definition of a street food outlet and the characteristics of each type (fixed, semi-fixed, mobile; person or structure, outlet as an extension to the public street; same or different shift) were specified. |
| 4.- Does the outlet sell in other locations? | 1 | ||
| 5.- May we take a picture of your outlet? | 1 | ||
| 6.- What types of surroundings are near the outlet? | 1 | ||
| 7.- Outlet’s name | 1 | ||
| 8.- Address | 1 | Georeference of the positions. | The Street Food and Beverage Tool was programmed to digital format in the REDCap application, which allows the outlet to be georeferenced. |
| 9.- Structural features | 1 | ||
| 10.- Number of people working in the outlet | 1 | ||
| 10·1.- Number of men, women and children | 1 | ||
| 11.- Categories of products offered (food, beverages, mix) | 1 | Include an option that contains mixed (beverages, food, toys, cigarettes and among others). | This suggestion was added to item 11 to identify if the outlet has other sales options. In addition, item 11·1 was added to identify whether they sold more, less or the same food and beverages as other products. |
| 12.- What type of preparations do they sell? (homemade or industrialised ready-to-eat, prepared entirely on-site, prepared partially on-site) | 1 | ||
| 13.- Presentation and handling of food and beverages | 1 | ||
| 14.- Do the staff wear a cap/hat/net? | 1 | ||
| 14·1.- Do the staff wear masks? | 1 | ||
| 14·2.- In the case of one or more persons wearing the mask, do they use it correctly? | 1 | ||
| 14·3.- When collecting money, do the staff wear gloves or other hand protection to handle the cash? | 1 | ||
| 14·4.- Does the outlet have gel-type disinfectant for staff and/or clients? | 1 | ||
| 14·5.- Does the street food outlet have garbage cans or bags for staff or clients? | 1 | ||
| 15.- Food and Beverages availability Beverages | 1 | ||
| Meats | 1 | ||
| Fruits and vegetables | 1 | ||
| Sweet and/or salty snacks | 1 | ||
| Fast food and Mexican snacks | 1 | ||
| Nuts, seeds and insects | 1 | ||
| Dairy products | 1 | ||
| Variety of foods | 1 | ||
| Others | 1 | ||
| 15·1.- Score | 1 | ||
| Average | 0·99* |
*
CVI: Content Validity Index.