7 OCT 2026 — Researchers gave new mothers on low incomes a dedicated guide for the year after birth and compared them with usual care. The randomised trial, published on 2 October in JAMA Health Forum, missed its main goal, but it nearly doubled the share who went on to see a primary care doctor. It was run at a single academic medical centre in the US Midwest.
Its main measure was so demanding that almost nobody met it in either group. The differences showed in the secondary results.
What the navigators did
The trial, run by researchers at Northwestern University's Feinberg School of Medicine, enrolled 405 pregnant people aged 16 or older who were covered by Medicaid, the US public insurance programme for people on low incomes, and who spoke English or Spanish. It ran from January 2020 to July 2024. Half were assigned a lay navigator for a year after birth; the other half received usual care.
Two full-time bilingual navigators worked inside the clinical team with access to medical records, according to the paper. They identified social needs, booked appointments, helped with insurance, gave health education, attended appointments with participants and acted as their advocates.
The main goal it missed
The primary outcome required a mother to receive all six elements that the American College of Obstetricians and Gynecologists considers essential within 12 weeks of birth: a full postpartum visit, all indicated guidance, her chosen contraception, depression screening with follow-up if needed, starting and keeping up breastfeeding, and all recommended vaccines.
Only 9.4% of the navigation group and 7.9% of the usual care group managed all six, a difference that could easily be chance. The authors say the trial was underpowered for this measure because so few people achieved the full set, and that the result itself shows how hard complete postpartum care is to deliver even in a well-resourced hospital.
Where it made a difference
Counted element by element, navigation did better. People with a navigator received an average of 71% of the six components, against 64% in usual care. Three elements drove the gap: completing the postpartum visit (96% against 80%), receiving all indicated guidance (65% against 51%), and depression screening and care (86% against 72%).
The larger effects came later. By 11 to 13 months after birth, 57% of the navigation group had attended a primary care visit, against 30% with usual care, a relative risk of 1.9. They were more likely to be using the contraception they wanted (65% against 43%) and to have been screened and linked to care for depression (37% against 21%). They were also more likely to have had cardiometabolic screening and recommended vaccines.
Why the year after matters
Many participants had been uninsured before pregnancy and had other health conditions, the authors note, so a link to primary care could matter for years afterwards. Pregnancy brings people into regular medical contact, and the months after birth are when that contact tends to drop away.
Limits of the trial
It was a single urban academic medical centre in the Midwest, and the authors say navigation is highly dependent on context and may be hard to replicate. Enrolment began just before the Covid-19 pandemic, which may have affected care. Because outcomes came from medical records, some guidance may not have been documented, which would hide differences rather than create them. The paper does not report what the programme cost.
The trial is registered as NCT03922334.
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