Perinatal Data Collection – Variable information Variable Description/Notes Codes Year of birth [year] Available from 1994. Year of birth, based on baby’s date of birth. Mother’s date of birth [mdob] Available from 1994 onwards. Full date of birth will only be supplied if sufficient justification is supplied that age is insufficient. Date of birth may otherwise be supplied as MMYYYY. Mother’s age [age] Available from 1994 onwards. Age in completed years. Mother’s age group [agegrp] Available from 1994 onwards. Age in five year grouping. 3 = 10-14 years 4 = 15-19 years 5 = 20-24 years 6 = 25-29 years 7 = 30-34 years 8 = 35-39 9 = 40-44 years 10 = 45-49 11 = 50-54 years 12 = 55-59 years 19 = Not stated Mother’s country of birth [cob] Available from 1994 to 2015. Mother’s country of birth. Codes are the Australian Bureau of Statistics 4 digit country of birth names
Health Area of hospital [ahshos_2005_code] Available from 1994 to 2010. Health Area (2005) of hospital. Not available from 2011 onwards See Attachment 1 – Area Health Services Health District of hospital [lhdhosp_2010_code] Available from 1994 onwards. Health District of hospital. Code XPRV refers to private hospitals. See Attachment 2 – Local Health Districts Mother’s SLA of residence [sla_2011_code, sla_2001_code, sla_2006_code, sla_1996_code] Availability noted below. Mother’s Statistical Local Area of residence Sla_1996_code – 2000 to 2015 Sla_2001_code – 2000 to 2015 Sla_2006_code – 1994 onwards Sla_2011_code – 2000 onwards Note: prior to 2016, non-NSW residents were coded to state and territory codes described in attachment 2 – Local Health Districts. are according to the Australian Standard Geographical Classification (ASGC) issued by the Australian Bureau of Statistics . Mother’s Statistical area 2 of residence [sa2_2011_code] Available from 2000 onwards. Note: from 2000 to 2015, non-NSW residents were coded to state and territory codes described in attachment 2 – Local Health Districts. Codes are according to ABS Cat. No. 1270.0.55.001 – Australian Statistical Geography Standard (ASGS): volume 1 – Main structure and greater capital city statistical areas, July 2011. Mother’s Statistical area 3 of residence [sa3_2011_code] Available from 2000 onwards. Note: from 2000 to 2015, non-NSW residents were to state and territory codes described in attachment 2 – Local Health Districts. Codes are according to ABS Cat. No. 1270.0.55.001 – Australian Statistical Geography Standard (ASGS): volume 1 – Main structure and greater capital city statistical areas, July 2011.
Expected date of confinement [edcdate] Available from 2006 onwards. Full date will only be supplied if sufficient justification is supplied that gestational age is insufficient. Previous pregnancy >20 weeks gestation? [prevpreg] Available from 1994 onwards. Previous pregnancy greater than 20 gestation 0 = No 1 = Yes 9 = Not stated Number of previous pregnancies [pregnum] Available from 1994 onwards. Number of previous pregnancies greater than 20 weeks gestation Was last birth by caesarean section? [csbirth] Available from 1998 onwards. 0 = No 1 = Yes 9 = Not stated Total number of previous caesarean section [cstotal] Available from 1998 onwards. Amniocentesis (<20 weeks) [oamn] Available from 1994 to 2006. 0 = No 1 = Yes 9 = Not stated CVS (<20 [ocvsonly] Available from 1994 to 2006. Chorionic villus sampling. 0 = No 1 = Yes 9 = Not stated Cervical suture [OCS] Available from 1994 to 1997. Cervical suture? 0 = No 1 = Yes 9 = Not stated Antenatal care [anc] Available from 2006 onwards. Was antenatal care received? 0 = No 1 = Yes 9 = Not stated
Induction/augmentation by ARM [arm] Available from 1998 to 2015. 0 = No/not stated 1 = Yes Induction/augmentation by other method [indaugot] Available from 1998 to 2015. 0 = No/not stated 1 = Yes Induction/augmentation by oxytocics [oxytocic] Available from 1998 to 2015. 0 = No/not stated 1 = Yes Induction/augmentation by prostaglandins [prostagl] Available from 1998 to 2015. 0 = No 1 = Yes 9 = Not stated Labour augmented by artificial rupture of membranes [labaugarm] Available from 2016 onwards. 0 = No 1 = Yes 9 = Not stated Labour augmented by oxytocins [labaugoxytocic] Available from 2016 onwards. 0 = No 1 = Yes 9 = Not stated Labour induced by artificial rupture of membranes [labinarm] Available from 2016 onwards. 0 = No 1 = Yes 9 = Not stated Labour induced by means [labindot] Available from 2016 onwards. 0 = No 1 = Yes 9 = Not stated Labour induced by oxytocics [labinoxytocic] Available from 2016 onwards. 0 = No 1 = Yes 9 = Not stated Labour induced by prostaglandins [labinprostagl] Available from 2016 onwards. 0 = No 1 = Yes 9 = Not stated
Anaesthesia for delivery: Pudendal [an_d_pud] Available from 2006 onwards. 0 = No/not stated 1 = Yes Anaesthesia for delivery: Spinal [an_d_spi] Available from 2006 onwards. 0 = No/not stated 1 = Yes Anaesthesia for delivery: Epidural/caudal [an_d_epi] Available from 2006 onwards. 0 = No/not stated 1 = Yes Anaesthesia for delivery: Combined spinal-epidural [an_d_com] Available from 2006 onwards. 0 = No/not stated 1 = Yes Anaesthesia for delivery: General anaesthetic [an_d_ga] Available from 2006 onwards. 0 = No/not stated 1 = Yes Anaesthesia for delivery: Other [an_d_oth] Available from 2006 onwards. 0 = No/not stated 1 = Yes Epidural anaesthetic [epidural] Available from 1994 to 1997. 0 = No 1 = Yes 9 = Not stated Presentation [present] Available from 1994 to 1997. 1 = Vertex 2 = Other 3 = Breech 4 = Unknown 9 = Not stated
Model of care-antenatal: Hospital-based medical [mod_an_h] Available from 2006 to 2015. Model of care-antenatal: Hospital-based medical 0 = No 1 = Yes Model of care-antenatal: General practitioner [mod_an_gp] Available from 2006 to 2015. of care-antenatal: General practitioner 0 = No 1 = Yes Model of care-antenatal: Hospital-based midwife/midwives [mod_an_m] Available from 2006 to 2015. of care-antenatal: Hospital-based midwife/midwives 0 = No 1 = Yes Model of care-antenatal: Independent midwife [mod_an_im] Available from 2006 to 2015. Model of care-antenatal: Independent midwife 0 = No 1 = Yes of care-antenatal: Not applicable [mod_an_na] Available from 2006 to 2015. of care-antenatal: Not applicable 0 = No 1 = Yes Model of care-birth: Private obstetrician [mod_b_ob] Available from 2006 to 2015. Model of care-birth: Private obstetrician 0 = No 1 = Yes Model of care-antenatal: Hospital-based medical [mod_b_h] Available from 2006 to 2015. Model of care-antenatal: Hospital-based medical 0 = No 1 = Yes Model of care-birth: General practitioner [mod_b_gp] Available from 2006 to 2015. Model of care-birth: General practitioner 0 = No 1 = Yes Model of care-birth: midwife/midwives [mod_b_m] Available from 2006 to 2015. Model of care-birth: Hospital-based midwife/midwives 0 = No 1 = Yes
Model of care-birth: Independent midwife [mod_b_im] Available from 2006 to 2015. Model of care-birth: Independent midwife 0 = No 1 = Yes of care-birth: Not applicable [mod_b_na] Available from 2006 to 2015. Model of care-birth: Not applicable 0 = No 1 = Yes Main of care – birth [mod_birth_main] Available from 2016 onwards. The main of care used during the birth period. 01 = Private obstetrician 02 = Private midwife 03 = GP obstetrician 04 = Shared care 05 = Combined care 06 = Public hospital care 07 = Public hospital high-risk 08 = Team midwifery 09 = Midwifery caseload 10 = Remote area 11 = No formal care 99 = Not stated Main model of care – antenatal [mod_an_main] Available from 2016 onwards. The main model of care used during the antenatal period. 01 = Private obstetrician 02 = Private midwife 03 = GP obstetrician 04 = Shared care 05 = Combined care 06 = Public hospital care 07 = Public hospital high-risk 08 = Team midwifery 09 = Midwifery caseload 10 = Remote area 11 = No formal care 99 = Not stated