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IMAM coverage surveys

This question was posted the Coverage assessment forum area and has 2 replies. You can also reply via email – be sure to leave the subject unchanged.

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Anonymous 644

Normal user

19 Feb 2012, 22:04

I recently noticed that during two coverage surveys in my district of operation were conducted only for OTP.
Does the results give an analysis of both SFP and OTP coverage.?

Mark Myatt

Consultant Epideomiologist

Frequent user

20 Feb 2012, 09:40

This is a guess as I do not have sight of the coverage assessment reports ... most coverage assessments using the CSAS, SQUEAC, or SLEAC methods look only at CMAM coverage for SAM cases (OTP + stabilisation centre + inpatient TFC or inpatient TFC only). There is no good reason to think that CMAM and SFP coverage will be the same.

NOTE : These methods can be used for SFP coverage. This requires the use of house-to-house / door-to-door sampling because the active and adaptive / chain-refferal / snowball sampling methods that are commonly used in these surveys lacks case finding sensitivity for the more moderate MAM cases. Case finding sensitivity for the active and adaptive method from capture-recapture does in Ethiopia during the development of the CSAS method gave figures like this:

    < 70% WHM          100%
      70%-74% WHM        75%
      75-79% WHM     50%

We were still using W/H then

Mark Myatt

Consultant Epideomiologist

Frequent user

20 Feb 2012, 09:43

Oops ... clicked "submit" by accident.

We were still using W/H by NCHS then but there is no reason to think that this will change much for W/H using WGS or MUAC. Subsequent capture-recapture studies in Niger, Uganda, and Ethiopia confirm this for MUAC.

The poor sensitivity for the moderate MAM cases means we ned to use a census type sample to find MAM cases with useful sensitivity.

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