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Home » Countries » Bangladesh » Plasma blood glucose in 2011 and 2017/2018 (Error in the codebook, choice of sampling weight, and deviating number of observations)
Re: Plasma blood glucose in 2011 and 2017/2018 [message #22155 is a reply to message #22078] Mon, 08 February 2021 12:45 Go to previous messageGo to previous message
Trevor-DHS is currently offline  Trevor-DHS
Messages: 788
Registered: January 2013
Senior Member
1) It looks to me that you are not using the weights. When I use the following, I get roughly the right number (it is differing by 3 cases which I think is due to some missing data):
. tab sb325 [iw=hv005/1000000] if sb325 == 1 | sb325 == 0

    glucose |
   measured |
     before |      Freq.     Percent        Cum.
------------+-----------------------------------
         no | 9,828.9921       75.94       75.94
        yes |3,114.39667       24.06      100.00
------------+-----------------------------------
      Total | 12,943.389      100.00
Yes, some cases from the dataset are not used, specifically those that refused to answer the questions about glucose or refused to be tested.

For the table 13.5.3 on page 235 I match the number of cases using the following code:
tab sb335b [iw=hv005/1000000] if sb302==2 & sb303c >= 35 & sb335b < 900,m
This results in 3437 cases matching the table. Here I have included women age 35+ who have valid measures for glucose.

2) The data are recorded with 1 implied decimal place. That is a value of 125 should have one implied decimal place and is thus 12.5, or a value of 52 should have one implied decimal place and is thus 5.2. The label is a bit confusing and is as you say 10*mmol/L.

 
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