Rosters

June 21, 2016

Roster properties

When you select a roster, you can see its details in the right hand panel. Rosters are defined by a set of properties. While some features are common to all roster types, others are defined for a specific roster source.

Survey Solutions has 4 roster sources. Three of them depend on the question type linked to the roster: numeric question, list question and multi-select question. No question is linked to the fourth roster source: fixed set of items.

Non-nested rosters can have up to 200 rows.  If there are over 60 rows in the roster, the roster can contain up to 500 questions, on the other hand if there are more than 60 rows in the roster then the roster cannot contain more than 30 questions. This is particularly useful for market price and food consumption rosters, which typically have more than 100 rows on paper, they can now be designed as a single, large roster in Survey Solutions.

 

Creating a roster

To define the roster type:

  1. Click on the Roster source dropdown box.
  2. From the pop-up menu select the roster type by clicking on it.

The answer to the source question or the number of fixed set of items, defines the number of times the questions within the roster are repeated. This means that there will be a set of questions for each subject (individual, enterprise, crop, land, food item, non-food item, etc.). For this reason, a subject id (name, code id, etc.) is needed to differentiate the set of questions among the different subjects. The subject’s id can either be created automatically during the interview or be fixed.

When creating a roster make sure that you have defined the maximum number of answers allowed in the roster source (trigger) question, or in other words the maximum number of roster rows that can be created. 

 

Roster types

 

Numeric roster

The roster source is a numeric question. For example, consider the following questions:

How many people live in the household?
How many partners does the enterprise have?
How many lands do you cultivate?
How many crops did you harvest in the land?

The total number of household members, partners, lands or crops determines how many times the questions within the roster will be repeated.

The pictures below show an example of a numeric roster.

In Questionnaire Designer:

On a tablet:

 

List roster

The roster source is a list question. For example, consider the following questions:

List the people living in the household.
List the employees working in the enterprise. 
List the lands you cultivate.
List the crops you harvested in the land. 

The total number of listed household members, employees, lands or crops determines how many times the questions within the roster will be repeated.

The pictures below show an example of a list roster. 

In Questionnaire Designer:

On a tablet:

 

Multi-select roster

The roster source question is a multi-select question. A multi-select question in yes/no mode may also be used as a roster source question. Below are a few examples of multi-select questions: 

Was [the food items below] purchased in the last week? (in yes/no mode)
From the listed crops select those cultivated in your land
From the listed types of payment, select those accepted by the enterprise

The total number of selected food items, crops, or types of payment determines how many times the questions within the roster will be repeated. In the case of a multi-select question in yes/no mode the number of items marked as “yes” in the multi-select question will determine how many times the questions within the roster will be repeated.

The pictures below show an example of multi-select roster.

In Questionnaire Designer:

On a tablet:

The pictures below show an example of multi-select roster in yes/no mode.

In Questionnaire Designer:

On a tablet:

 

Fixed set of items roster

In the case of a fixed set of items roster, the subject ids are the fixed items defined in Questionnaire Designer.

To define them, click on the Add Item link to manually add each subject id and code.