Wednesday, July 18, 2018

What's new in midwifery - 18th July 2018

Some recent things you might need to know about.

Birth summary tables in England and Wales.
Includes annual births and mean age of mothers.

Scientific Advisory Committee on Nutrition
Feeding in the first year of life
Covers infant feeding from birth up to 12 months of age, looking at evidence of the impact of infant feeding on short and longer term health outcomes for infants and mothers. Also considers factors that influence eating behaviour and diversification of the diet and makes recommendations on feeding in the first year of life.

World Health Organisation
WHO Recommendations on Antenatal Care for a Positive Pregnancy Experience
Summary published by the USAID's Maternal and Child Survival Program, including summaries in French, Spanish and Portuguese.  

Case studies (NHS Atlas of Shared Learning)

Other things
BMJ obituary of T. Berry Brazelton, who devised the Neonatal Behavioral Assessment Scale.




With grateful thanks to:
EMBED Health Consortium's Health Bulletin, and the HIFA mailing list.

Monday, July 16, 2018

Health and Psychosocial Instruments database (HAPI)

HAPI provides information on measurement scales, tests and checklists (henceforth referred to as “instruments”) in health and psychology.  The University of Leicester has access to itthrough Ovid.

Ovid’s own database guide is a thorough guide to the search fields and limits.    This post attempts to be a basic introduction to searching HAPI.

Ovid’s usual search syntax applies.    A search with no field name appended is carried out in the title (of the scale or of the article being indexed), source (the article being indexed), acronym, descriptors, measure descriptors, sample descriptors and  abstract.

Measure descriptors describe what the instrument measures, for example brain injuries or behaviour.

Sample descriptors describe the people to whom the instrument is administered, for example infants, head injuries.

Descriptors are taken from the Thesaurus of Psychological Index Terms and MeSH but not every reference seems to have them.

If you look at the Complete Reference, you will see a field “Reference”, which is where the instrument being used in the reference indexed in HAPI was published.    That reference may not be the first publication of the instrument, and may itself not be indexed in HAPI.

These fields can be searched using usual Ovid syntax, so searches the Measure descriptor field.    A full list of field codes is in Ovid’s database guide.  There are others including Validity and Number of Questions.

There are limit tick boxes for Primary Source and Secondary Source.   

Primary Source is not always the original published source of the instrument.   But it is a source that contains the instrument.  A Secondary Source is a source that does not contain the instrument, but which describes how the instrument is used, and has some level of detail, including perhaps some questions.

So, Secondary Source will not find every article that has ever used the instrument.    To do that, you would need to use another database, perhaps Medline, using the name of the instrument as a freetext search (and that would not find everything), or Web of Science or Scopus, for articles that cite the reference of the original source.

As well as Primary and Secondary source, there are Review Source (articles that review instruments), Compendium Source (things like Mental Measurements Yearbook) and Translated Source (if you need a translation of an instrument).    These are under Limits > Additional Limits.

Example searches

A search for Neonatal Behavioral Assessment Scale (devised by T. Berry Brazelton, who passed away recently) finds 37 results.  One is a Primary Source, which is an article from 1981 which uses, and presumably lists, the scale.  32 are Secondary Sources.  Some, at least, in both categories, give a reference to the original publication in 1973.    However, the remaining four include the Mental Measurements Yearbook, which gives details of the 3rd edition of the scale itself.   So, the reference in the HAPI item may not be the latest version of the instrument.

A search for Glasgow Coma Scale finds 334 items.   10 are primary sources, some of which are variants of the scale.   Some at least reference the original publication, as well as the source indexed for HAPI.   81 of the 334 are neither primary or secondary, but none of those are the original source, although many are versions in other languages.   None of the Primary Sources are the original publication either (but if you did not know when or where the scale was published, you might not know this), but perhaps enough of the items reference the same Lancet paper in 1974 to make you think that was the original.   A Google search for the scale finds the scale’s website, which references the same article.   HAPI started in 1985, so will not index this 1974 paper.