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# st: Combining 7 variables with the same output into a single frequency table

 From Astha Ramaiya To statalist@hsphsun2.harvard.edu Subject st: Combining 7 variables with the same output into a single frequency table Date Wed, 13 Feb 2013 16:39:34 -0500

```Dear Nicholas,

I have 7 different variables (fever 1, fever 2, fever 3….fever7) with the same output (0=No, 1 = Yes). I want to combine all these variables so that i can calculate prevalence of the morbidity. For example:

Fever 1-7 give the output:

m_fever1 |      Freq.     Percent        Cum.
------------+-----------------------------------
1 |         50       14.3       14.7
2 |        300       85.7      100.00
------------+-----------------------------------
Total |        350      100.00

m_fever2 |      Freq.     Percent   Cum.
------------+-----------------------------------
1 |         0       	0      	 0
2 |        350      100.00      100.00
------------+-----------------------------------
Total |        350      100.00

m_fever3 |      Freq.     Percent        Cum.
------------+-----------------------------------
1 |         100       28.6       28.6
2 |        250       71.4      100.00
------------+-----------------------------------
Total |        350      100.00

How can i combine the 3 tables above to give me the following table?

m_fever |      Freq.     Percent        Cum.
------------+-----------------------------------
1 |         150       14.3       14.7
2 |        900       85.7      100.00
------------+-----------------------------------
Total |        1050      100.00

I have been trying to find something the entire day but haven't been successful. Any help would be very much appreciated.

Regards,

Astha.

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