To examine the association between birth intervals and perinatal mortality in Indonesia.

Cross-sectional study using reproductive calendar data from the 2017 Indonesia Demographic and Health Survey.

Nationally representative households in Indonesia.

A total of 17 171 women aged 15–49 with pregnancies in the 5 years preceding the survey. Women with missing data or multiple births were excluded.

Perinatal mortality, defined as stillbirths and early neonatal deaths.

The perinatal mortality rate was 22 per 1000 births. Short birth intervals (

Short and long birth intervals were associated with higher perinatal mortality in Indonesia, with additional associations observed for antenatal care visits, maternal age and newborn sex. These findings underscore the importance of promoting healthy birth spacing within maternal and child health programmes and integrating postpartum family planning into routine care. Further longitudinal research is needed to confirm causal pathways and inform targeted interventions.

To examine chronic kidney disease (CKD) prevalence, incidence, prognosis, kidney function decline and associated risk factors among people with diabetes and/or hypertension.

Cross-sectional multicentre study.

14 primary care centres across Jakarta.

Adults (≥18 years) with diabetes and/or hypertension were included. Exclusion criteria were receiving kidney replacement therapy, language barrier, cognitive impairments, refusal to consent and pregnancy. Participants were grouped into three categories: hypertension only, diabetes only and both.

None.

Primary outcomes included CKD prevalence, incidence, number-needed-to-screen, KDIGO-based prognosis and annual kidney function decline. Secondary outcomes were risk factors for CKD, uncontrolled blood glucose, blood pressure and albuminuria.

A total of 1263 participants were enrolled: 51% had hypertension, 17.6% diabetes and 31.4% both. Mean age: 57.1±10.2 years, 72.2% female and 76% obese. Renin angiotensin aldosterone system inhibitors were prescribed in 32.3%, and only 1.2% used insulin despite a median glycated haemoglobin of 7.5% (IQR: 6.5–9.1). CKD prevalence was 14.8%, with an incidence rate of 9.1 per 100 person-years; number-needed-to-screen was 7. Based on KDIGO criteria, 48.9% were at moderate-to-very high risk of adverse outcomes. Baseline estimated glomerular filtration rate was 80.9 (SE=10.1), declining by 4.7 (SE=9.9) mL/min/1.73 m² annually. CKD incidence was higher with albuminuria (OR 3.6, p=0.007) in the combined group; older age (OR 4.5, p

CKD burden is high among people with diabetes and hypertension. Nearly half were at elevated risk despite preserved kidney function, highlighting the need for targeted early screening.