Antenatal General (AG)

Data Definition: At the time of current pregnancy, the total number of children the pregnant person has given birth to that are presently living.

Data Definition: Self-reported alcohol consumption during pregnancy. A standardized serving of alcohol beverage is approximately a 12oz serving of regular beer (5%), a 5oz glass of wine (12%) or a 1.5oz glass of 40% spirit (SOGC, 2010). If the amount of drinking varied over the course of the pregnancy, estimate the total number of drinks and average it out over the entire pregnancy. Select the one that represents the highest exposure or impact. 'Episodic excessive drinking (binging)'is considered the greatest impact.

Data Definition: Diabetes status and type for this pregnancy.

Data Definition: Indicate Maternal self-reported drug and substance use during pregnancy. This refers to the use of street drugs and the inappropriate use of prescription and non-prescription drugs.

Data Definition: Indicate whether this women underwent radiation therapy if there is a diagnosis of cancer prior to or during this pregnancy

Data Definition: Any hypertensive conditions the pregnant person experienced during this pregnancy.

Data Definition: Any infections during this pregnancy. Select all that apply.

Data Definition: Prescription and/or non-prescription (over-the-counter) medication(s) taken during this pregnancy, prior to admission for labour/birth, as documented on the Ontario Perinatal Record and/or Admission history. Select all that apply.

Data Definition: Self-disclosed threat of or actual physical, sexual, psychological, verbal, emotional, or financial abuse in the current relationship.

Data Definition: Use of folic acid prior to and during pregnancy

Data Definition: Comment to capture details not identified in other data elements.

Data Definition: Indication of whether there was a consultation with a physician for each listed maternal condition or complication in pregnancy.

Data Definition: MW - Antenatal Consultation Reason

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Data Definition: For each transfer from midwifery care, indication of whether care was returned in the antenatal period.

Data Definition: Indicates need for outpatient hospital services in the antenatal period for each condition or complication in pregnancy.

Data Definition: Indicates need for admission to hospital in the antenatal period for each condition or complication in pregnancy.

Data Definition: Indicates the provider(s) for first trimester visit (before 12 weeks gestational age).

Data Definition: 'Yes' indicates that midwifery care was provided to a client during and after a pregnancy loss (< 20 weeks gestation and < 500 grams; spontaneous miscarriage or termination). 'No' indicates that midwifery care was not indicated/provided after a pregnancy loss (< 20 weeks gestation and < 500 grams; spontaneous miscarriage or termination).

Data Definition: Indicates whether prenatal genetic screening was offered.

Data Definition: Number of post-pregnancy loss visits provided.

Data Definition: Estimated date of birth as per ultrasound or Nägele's rule.

Data Definition: Gestational age when the client began midwifery care (booking date). The booking date should be the first clinical entry recorded on the Ontario Perinatal Record.

Data Definition: Outcome of the pregnancy/birth, including live birth, stillbirth, termination, and loss. BORN encourages all hospitals to complete a Labour Birth encounter for all pregnancy losses.

Data Definition: Number of fetuses in the current pregnancy. For Prenatal Screening Follow Up encounters, this field refers to the number of fetuses that the prenatal screening result was based on.

Data Definition: mother/parent's date of birth in the format of day, month, year

Data Definition: Health conditions that are present before pregnancy. Select all that apply.

Data Definition: Health conditions that are present before pregnancy that are not already listed.

Data Definition: Height, measured in imperial or metric units. Reported in metric units.

Data Definition: Height is not known.

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Data Definition: Self-reported weight closest to conception and no later than 12 weeks of gestation (metric or imperial units).

Data Definition: Pre-pregnancy weight is not known.

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Data Definition: Pre-pregnancy Maternal Weight value entered by user through UI

Data Definition: Pre-pregnancy Body Mass Index (BMI) defined as weight in kilograms divided by the square of the height in metres (kg/m2). Auto-calculated.

Data Definition: Self-reported amount of smoking per day at time of first prenatal visit.

Data Definition: Resides with smoker at first prenatal visit.

Data Definition: Total number of previous pregnancies plus present pregnancy regardless of gestational age, type, time or method of termination/outcome. A pregnancy with twins/multiples is counted as one pregnancy.

Data Definition: Total number of previous pregnancies with birth occurring at greater than or equal to 37+0 weeks.

Data Definition: Total number of previous pregnancies with birth occurring between 20+0 and 36+6 weeks.

Data Definition: Total number of previous pregnancies resulting in a stillbirth. A stillbirth is defined as a product of conception weighing 500 grams or more or of 20+0 or more weeks’ gestation, which after being completely delivered shows no sign of life. Intentional terminations of pregnancy that meet either criterion are also classified as stillbirths in Ontario.

Data Definition: Total number of previous pregnancies resulting in a vaginal birth occurring at greater than or equal to 20+0 weeks gestation. Number excludes current pregnancy. Multiple gestations are counted as one birth event.

Data Definition: Total number of previous pregnancies resulting in a cesarean birth occurring at greater than or equal to 20+0 weeks gestation. Number excludes current pregnancy. Multiple gestations are counted as one birth event.

Data Definition: Total number of previous vaginal births after cesarean birth (VBAC).

Data Definition: Total number of spontaneous or therapeutic abortions occurring prior to 20+0 weeks. Spontaneous abortions include miscarriage, ectopic pregnancy, missed abortion, and molar pregnancy.

Data Definition: Indicates whether patient/client attended any prenatal education classes during the current pregnancy. This includes online education requiring registration or enrollment as well as in-person classes and does not include prenatal education provided by midwives/nurses/physicians during routine antenatal care visits.

Data Definition: Indicates prenatal visit with a regulated health care provider during the first trimester (<13+0 weeks) of the current pregnancy.

Data Definition: Indicates intention to feed infant human milk, regardless of the method of feeding. Includes intention to feed at the breast/chest, or provide expressed or donor milk. Self-reported during pregnancy or at time of birth.

Data Definition: Indicate any mental health concerns during this pregnancy including those pre-existing, diagnosed during pregnancy or active during pregnancy. Both diagnosed or self-reported.

Data Definition: Designation of the health care provider(s) (HCP) that provided antenatal care.

Data Definition: All complications experienced during this pregnancy, except for hypertension or diabetes as these conditions are captured in separate data elements.

Data Definition: Progesterone taken daily for spontaneous preterm birth prevention, any time after 16 weeks gestation. Does not include progesterone used only in first trimester.

Data Definition: ASA (aspirin) taken daily for preeclampsia prevention, any time after 12 weeks’ gestation (Do NOT include if aspirin is used only in first trimester)

Data Definition: Gestational Carrier: Person carrying embryo/fetus who will not be the intended parent of this child.

Data Definition: The date, if known, of a positive COVID-19 test during this pregnancy.

Data Definition: Indicates whether the person was admitted to hospital during this pregnancy specifically for respiratory or other issues related to COVID-19.

Data Definition: The ABO blood group and the presence (+) or absence (-) of the Rh factor of the pregnant individual.

Data Definition: Indicates whether the results of the antibody screen of the pregnant individual was positive or negative. A negative screen indicates that no atypical antibody was detected, and a positive screen indicates that an atypical antibody was detected.

Data Definition: Indicates if the pregnant individual has received an injection of Rh(D) Immunoglobulin during the current pregnancy and the number of doses they have received.

Data Definition: Indicates the date that the latest Rh(D) Immunoglobulin dose was given to the pregnant individual prior to birth.

Data Definition: Indicates that the date that the latest Rh(D) Immunoglobulin dose was given to the pregnant individual prior to birth is not known.

Data Definition: Method of conception for this pregnancy; indicates if reproductive assistance was required to achieve current pregnancy

Data Definition: Cannabis use during this pregnancy, expressed as the frequency of use (not dose or route).

Data Definition: Did the pregnant person plan for a home birth at any point during pregnancy (from conception to intrapartum)?

Data Definition: The provider number of the midwifery care coordinator. This can be the same or a different provider number as that selected as the billing midwife.

Data Definition: The total number of prenatal visits (appointments) with the Primary Midwife.

Data Definition: The total number of prenatal visits (appointments) with the Second Midwife.

Data Definition: The total number of prenatal visits (appointments) with midwifery students.

Data Definition: Indicates whether the client received midwifery care in Ontario in a previous pregnancy.

Data Definition: Birth order of each baby (Twin A= first born, Twin B=second born), irrespective of live birth or stillbirth.

Data Definition: Indicates that care was provided to this client by another Ontario Midwifery Practice Group.

Data Definition: Indicates that there was a transfer of care to another primary health care provider.

Data Definition: Discharged from midwifery care while pregnant, prior to intrapartum period. If yes is selected, a billing tab is created.

Data Definition: The calendar date when the client began midwifery care. The booking date should be the first clinical entry recorded on the Ontario Perinatal Record.

Data Definition: Client OHIP coverage.

Data Definition: Total number of midwives providing care, determined at time of discharge from midwifery care.

Data Definition: Number of prenatal visits that took place at home. Includes ‘labour check’ home visits in the Home Prenatal visit count, not including the visit that resulted in attendance for labour/birth.

Data Definition: Number of prenatal visits that took place at the hospital.

Data Definition: Number of prenatal visits that took place at the midwifery clinic.

Data Definition: Number of prenatal visits that took place virtually (online/telephone).

Data Definition: Number of prenatal visits that took place at a location other than clinic, home, or hospital.

Data Definition: The calendar date of the last midwife visit provided to the client prior to discharge from midwifery care.

Data Definition: Indicates if there were there any consults, transfers of care, or use of hospital/outpatient/emergency services during that period.

Data Definition: Other maternal condition or complication

Data Definition: Comments about the reason for the consult, transfer of care or the use of hospital/outpatient/emergency services.

Data Definition: There are multiple reasons why a midwife may choose to transfer care, including midwifery judgement, scope of practice limitations as defined by the midwifery regulatory body, and hospital/physician protocol. Was this consultation/transfer of care ONLY because of hospital/physician protocol?

Data Definition: There are multiple reasons why a midwife may choose to consult, including midwifery judgement, scope of practice limitations as defined by the midwifery regulatory body, and hospital/physician protocol. Was this consultation/transfer of care ONLY because of hospital/physician protocol?

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Data Definition: The midwife's billing number for this course of care.

Data Definition: Method by which the estimated date of birth was determined for prenatal screening

Data Definition: Indicates the number of deliveries (including live births and stillbirths) where pregnancies reached viable gestational age (minimum 20 weeks). When completed postnatally, parity includes current birth for HBHC

Data Definition: Name of Hospital Site.

Data Definition: Name of Midwifery Practice Group