Health Index Calculation



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Upload your data, as a comma (or semicolon) separated .csv file (easy to export from for example excel). The first line of the file should contain headings.
The columns should correspond to the Western Hemisphere Module SAS Column headings.
You can download an example csv file, and an excel template file.

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Note: We do not keep any files on our servers. Please remember to save all results generated by the Health Index Software.






Instructions for using the Online Health Index Calculation Software


  1. Construct data sets


·                     The data must be submitted as an Excel file saved in a Comma Delimited Format (*.csv extension).

·                     All 46 variables specified in the codebook must be present for each record.  If the value for a particular variable is missing or un-scored, the field should either be empty or a “.” placed in the field.  The SAS headings for these variables are available at

·                     The first line of the file must list the variable names, and subsequent lines must be the records for individual skeletons.

·                     An example of a file file that meets the criteria can be downloaded from

·                     Note that the site ID (the first variable) must be unique and identical for all records pertaining to the site.  The file may contain data for multiple sites but each ID must, of course, be different.  For an example, see the file indicated above.

·                     The program will not run unless the site includes at least some individuals throughout the range of ages, including young juveniles, adolescents, young adults and old adults.  



  1. Running the Program


·                     Go to the link


·                     Browse and select the file constructed from step 1.


·                     Click Upload.


·                     In case of errors, the program will report the line number in the file at which the error occurred.  For example, the number of variables for that record may not equal 46.


  1. Interpreting the Results



If Step 2 was successful, the program provides several statistics in addition to the health Index Calculated:-


3.1 Age Categories

·                     For each site present in the csv file, the program prints the number of cases belonging to each of the age categories 0-4, 5-9, 10-14, 15-24, 25-34, 35-44 and 45+.

·                     If for any of these categories the number of cases falls below 1, the health Index calculation cannot be performed for that site. This is indicated by a red row in the category table.

·                     If the number of cases in a particular age category is from 2 and 4, the row will be yellow, indicating the results should be interpreted with caution.

·                     If there are 5 or more cases for a category, the corresponding row will be green. The software proceeds to calculate the health Index so long as there are no red rows for a site.


3.2 Frequency of variables scored.

·                     This section indicates the frequency of variables that are scored for each site.

·                     Each Site has a separate column.

·                     The number of IDs represents the total number of cases present in the data set.


3.3 Data Check.


The data check performs basic statistical calculations on numeric data, shows the frequency of non-numeric data, and the mean of numeric data across all cases in the data set (Unlike 3.2, it Does not distinguish on the basis of sites).



3.4 Results


            The output will have the following column headings:





% of max










where the first variable shows site ID and the second the sequence number for the site (this will be “1” if data for only one sites was submitted).  QALY refers to “quality adjusted life years”, a concept discussed in chapter 3 of The Backbone of History.  % of max (QALY out of 26.4 years) is the value for the health index.  The next 7 columns show index values for each component of the index.  If data for a variable are entirely lacking, the score given is -1.0.  At least 5 of the 7 categories must be scored for the index to be calculated, in which case the categories are still weighted equally.  The last column shows the number of person-years of morbidity that form the basis for the health index, and is a measure of sample size for the site.