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Diabetes in pregnancy: are we providing the best care ... - HQIP

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Associations <strong>are</strong> reported <strong>in</strong> Chapters 6–10 for poor <strong>pregnancy</strong> outcome, which comb<strong>in</strong>es two separate<br />

adverse outcomes, fetal congenital anomaly and death from 20 <strong>we</strong>eks of gestation, comp<strong>are</strong>d to controls.<br />

In some cases, this precludes a more specifi c focus on <strong>the</strong> impact of <strong>the</strong> particular behaviour or c<strong>are</strong> factor<br />

on <strong>in</strong>dividual poor outcomes e.g. fetal anomalies. For this reason, Appendices C, D, and E have been<br />

<strong>in</strong>cluded to provide <strong>in</strong>formation on associations with poor outcome for each additional case defi nition<br />

(fetal congenital anomalies, all deaths, and deaths exclud<strong>in</strong>g anomalies).<br />

It is recognised that some of <strong>the</strong> factors reported to have an association with adverse outcome <strong>are</strong> not<br />

likely to be on <strong>the</strong> causal pathway, for example poor glycaemic control after <strong>the</strong> fi rst trimester of <strong>pregnancy</strong><br />

is unlikely to have been causative for fetal congenital anomaly, and poor diabetes c<strong>are</strong> after delivery is not<br />

causative for poor <strong>pregnancy</strong> outcome. Ho<strong>we</strong>ver, <strong>the</strong>re may be o<strong>the</strong>r explanations for <strong>the</strong>se associations,<br />

and <strong>the</strong>y have <strong>the</strong>refore been reta<strong>in</strong>ed, with discussion <strong>in</strong> <strong>the</strong> text where appropriate.<br />

Results reported with<strong>in</strong> chapter 6 <strong>are</strong> crude odds ratios exam<strong>in</strong><strong>in</strong>g each potential risk factor or assessment<br />

of cl<strong>in</strong>ical c<strong>are</strong> and its association with poor <strong>pregnancy</strong> outcome <strong>in</strong> isolation. In order to allow for potential<br />

confound<strong>in</strong>g factors, all odds ratios <strong>we</strong>re adjusted for <strong>the</strong> effect of maternal age and deprivation on<br />

<strong>pregnancy</strong> outcome and <strong>the</strong>se <strong>are</strong> also displayed. These adjusted odds ratios <strong>are</strong> displayed throughout<br />

chapters 7-9. It is possible, ho<strong>we</strong>ver, that <strong>the</strong>re <strong>are</strong> additional confound<strong>in</strong>g factors or <strong>in</strong>teractions which<br />

have not been allo<strong>we</strong>d for <strong>in</strong> this analysis.<br />

4.11 The diabetes neonatal enquiry<br />

Details on <strong>the</strong> methodology and derivation of recommendations for <strong>the</strong> diabetes neonatal enquiry<br />

can be found <strong>in</strong> Chapter 12.<br />

References<br />

1. Confi dential Enquiry <strong>in</strong>to Maternal and Child Health: Pregnancy <strong>in</strong> women with type 1 and<br />

type 2 diabetes <strong>in</strong> 2002-03, England, Wales and Nor<strong>the</strong>rn Ireland. CEMACH: London; 2005.<br />

2. Mac<strong>in</strong>tosh M, Flem<strong>in</strong>g K, Bailey J, Doyle P, Modder J, Acolet D, et al. Per<strong>in</strong>atal mortality and<br />

congenital anomalies <strong>in</strong> babies of women with type 1 or type 2 diabetes <strong>in</strong> England, Wales and<br />

Nor<strong>the</strong>rn Ireland: population based study. BMJ, Jul 22 2006 333 (7560):177.<br />

3. Confi dential Enquiry <strong>in</strong>to Stillbirths and Deaths <strong>in</strong> Infancy. Project 27/28: An Enquiry <strong>in</strong>to quality<br />

of c<strong>are</strong> and its effect on <strong>the</strong> survival of babies born at 27-28 <strong>we</strong>eks. The Stationery Offi ce:<br />

London; 2003.<br />

17

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