Admission rates (per 100 births) for each diagnosis category at each gestational age strata.

<p>Admission rates (per 100 births) for each diagnosis category at each gestational age strata.</p

Most common diagnoses associated with perinatal admissions 29 days-1year.

<p>Most common diagnoses associated with perinatal admissions 29 days-1year.</p

Most common diagnoses associated with perinatal admissions 0–28 days.

<p>Most common diagnoses associated with perinatal admissions 0–28 days.</p

Risk of adverse infant outcomes for assisted vaginal deliveries compared with unassisted deliveries in 158,241 WA public and private patient birth admissions.

<p>X-axis represents odds ratios (middle black dots) and 95% confidence intervals (top and bottom black dots). Logistic regression models -adjusted for the same factors as in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0061699#pone-0061699-t003" target="_blank">Table 3</a>- were run separately for private and public patients to calculate separate odds ratios (ORs) for the risk of adverse infant outcomes for assisted vaginal deliveries compared with unassisted deliveries.</p

Risk of adverse maternal and infant outcomes after assisted vaginal delivery compared with unassisted vaginal for 158,241^a WA vaginal births.

a<p>Restricted to vaginal, singleton, term births (37–41 completed weeks), where the infant was live born and without birth defects.</p>b<p>Adjusted for year of birth, maternal age, parity, patient status (not in stratified analysis), hospital type (private/public/tertiary), smoking during pregnancy, marital status, ethnicity (Caucasian/Indigenous/other), pre-existing medical conditions (asthma/hypertension/diabestes), SES quintiles, residential remoteness, gestation, infant weight, pregnancy complications, labour and delivery complications, analgesia during labour (none/gas or intramuscular/epidural/spinal), and whether the labour was induced.</p>c<p>Apgar score at 5 minutes = 0–6.</p>d<p>Endotracheal intubation or external cardiac massage.</p

Average quarterly birth rates by birth characteristics before and after the baby bonus introduction as well as post-2004 assuming the policy did not occur.

a<p>per 100 births.</p>b<p>between post-BB rates and expected rates post-2004 (assuming the policy did not occur).</p><p>BB = baby bonus.</p

Estimated quarterly birth rates in WA during July 2001 to December 2008.

<p>Vertical lines represent the period of the baby bonus implementation (April 2004-March 2005) that was excluded from the analysis. Horizontal line represents the trend line of the pre-baby bonus period, which was projected until 2008 assuming that no policy implementation occurred.</p

Average quarterly birth rates by maternal demographics before and after the baby bonus introduction as well as post-2004 assuming the policy did not occur.

a<p>per 1000 population.</p>b<p>between post-BB rates and expected rates post-2004 (assuming the policy did not occur).</p>c<p>SES: Socio-economic status. Sextiles 1–3.</p>d<p>SES: Socio-economic status. Sextiles 4–6.</p>e<p>Major cities and inner regional Australia.</p>f<p>Outer regional Australia, remote Australia, and very remote Australia.</p><p>BB = baby bonus.</p

Estimated average quarterly birth rates after the introduction of the PHII reforms (Jul01– Mar04) compared with rates that would have been expected at the same time had the policies not occurred.

a<p>per 10,000 population.</p

Maternal age characteristics of WA birth admissions during January 1995-March 2004.

a<p>Chi square test of independence.</p