Chronic maternal hypertension 0 = No/not stated Chronic hypertension 1 = Yes Pregnancy-induced Pregnancy-induced hypertension or pre-eclampsia. Available for 0 = No/not stated hypertension 1994-2006 1 = Yes Pregnancy-induced Available from 2006-2010 0 = No/not stated hypertension - proteinuric 1 = Yes Pregnancy-induced Available from 2006-2010 0 = No/not stated hypertension non-proteinuric 1 = Yes – Pre-eclampsia Available from 2011 0 = No/not stated 1 = Yes Gestational hypertension Available from 2011 0 = No/not stated 1 = Yes APH unknown) Available for 1994-1997 0 = No/not stated 1 = Yes APH (due to placenta abruptio) Available for 1994-1997 0 = No/not stated 1 = Yes APH (due to placenta praevia) Available for 1994-1997 0 = No/not stated 1 = Yes Blood group iso-immunisation Available for 1994-1997 0 = No/not stated 1 = Yes Prelabour rupture of Available for 1994-1997 0 = No/not stated membranes (>24 hours) 1 = Yes Threatened premature labor Available for 1994-1997 0 = No/not stated 1 = Yes Maternal Hepatitis B Mothers who are hepatitis B surface antigen positive. Available 0 = No/not stated for 1994-1997 and from 2011 onwards 1 = Yes Major puerperal infection Available for 1994-1997 0 = No/not stated 1 = Yes Third degree tear Available for 1994-1997 0 = No/not stated 1 = Yes
Chronic hypertension Chronic maternal hypertension 0 = No/not stated 1 = Yes Pregnancy-induced hypertension Pregnancy-induced hypertension or pre-eclampsia. Available for 1994-2006 0 = No/not stated 1 = Yes Pregnancy-induced hypertension - proteinuric Available from 2006-2010 0 = No/not stated 1 = Yes Pregnancy-induced hypertension – non-proteinuric Available from 2006-2010 0 = No/not stated 1 = Yes Pre-eclampsia Available from 2011 0 = No/not stated 1 = Yes Gestational hypertension Available from 2011 0 = No/not stated 1 = Yes APH unknown) Available for 1994-1997 0 = No/not stated 1 = Yes APH (due to placenta abruptio) Available for 1994-1997 0 = No/not stated 1 = Yes APH (due to placenta praevia) Available for 1994-1997 0 = No/not stated 1 = Yes Blood group iso-immunisation Available for 1994-1997 0 = No/not stated 1 = Yes Prelabour rupture of membranes (>24 hours) Available for 1994-1997 0 = No/not stated 1 = Yes Threatened premature labor Available for 1994-1997 0 = No/not stated 1 = Yes Maternal Hepatitis B Mothers who are hepatitis B surface antigen positive. Available for 1994-1997 and from 2011 onwards 0 = No/not stated 1 = Yes Major puerperal infection Available for 1994-1997 0 = No/not stated 1 = Yes Third degree tear Available for 1994-1997 0 = No/not stated 1 = Yes