Smoking in pregnancy

The percentage of women giving birth in 2007/08 who are current smokers at the time of delivery out of all maternities where smoking in pregnancy status is recorded.

Care Quality Commission

Department of Health (DoH)

http://www.ic.nhs.uk/pubs/wsstd1213q1

England

Local Authority District (LAD), County/Unitary Authority, Government Office Region (GOR), National

2012/13

2007/08 to 2012/13

Quarterly

Administrative data

93% of LAs have less than or equal to 5% mothers with unknown smoking status and were therefore deemed as having valid prevalence The indicator is based on the mothers response and is therefore susceptible to responder bias. The data is originally recorded at PCT level which has been converted to LA level using birth weighting. If there are several LAs within one PCT they will all have the same prevalence, thereby masking any variation in prevalence which may exist within that PCT. The county, GOR, SHA and England prevalence's were calculated from the LAs with valid data, therefore if these LAs are not truly representative of the areas they are being aggregated to, it would result in a biased estimate for aggregated areas.

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