Our objective was to examine the barriers and facilitators encountered by primary and secondary healthcare professionals when collaborating at the care continuum between primary and secondary care. We aimed to identify specific challenges, observed benefits and proposed changes. By analysing these experiences and identifying opportunities for redesign, we aimed to define specific domains that could improve collaboration, thereby supporting sustainable access to and quality of care in the face of rising demand and constrained resources.

A qualitative exploratory study using semi-structured interview data guided by two domains of the Consolidated Framework for Implementation Research (CFIR), including Inner Setting—Tension for Change and Individual Characteristics, as well as selected implementation outcomes defined by Proctor et al, all viewed through a service (re)design lens.

Consultation and communication between primary and secondary healthcare professionals in a Dutch urbanised area.

37 users of collaboration services (eg, telephone, correspondence) were interviewed between August 2021 and October 2022, including 14 general practitioners (GPs) (10 females, 4 males) and 23 specialists (10 females, 13 males).

Four key domains with subthemes, subdivided per operation and CFIR domain, were identified as central to optimising the collaboration of professionals within the primary-secondary care continuum: (1) software and record integration; (2) seamless personal interaction; (3) eliminating a sense of ‘us vs them’ and (4) gaps in continuity of care.

This study reveals that healthcare professionals in both primary and secondary care face similar collaboration challenges due to system-level issues and inadequate collaboration tools, leading to increased workload, miscommunication and reduced quality of care. Improving collaboration between GPs and specialists requires not only adjustments to individual services, but a comprehensive overhaul of the referral and back-referral process. A more integrated approach, addressing key domains, is crucial for enhancing care quality, streamlining workflows and improving health outcomes.

Despite an increasing use of screens among preschool children and evidence suggesting potential adverse effects, there is a paucity of longitudinal research that aims to disentangle the multifaceted components of screen use and their unique associations with development. We present a protocol for a large-scale national longitudinal study with repeated measurements in Danish preschool children, with the aim of investigating the cross-sectional and cross-lagged longitudinal associations between screen use and psychological outcomes.

The Digital Child Study is a national prospective observational cohort of Danish preschool children. Baseline parent-report data collection commenced in 2024 via online questionnaires, and in total will include three time points over 1 year: baseline (age 4 years), and follow-ups at 6 and 12 months (ages 4.5 and 5 years). Participants were divided into two waves based on birth dates, starting in March and September 2024. Recruitment targeted parents and primary caregivers of all Danish children born between specific dates in 2020. Of 30 235 children whose parents were sent invitations, baseline questionnaire data were available for 11 690 (39%).

Children’s screen use was measured by detailed information of amount, content and timing of children’s screen use, and the broader context, incorporating parental mediation strategies, attitudes, motivations and practices. Cognitive and socioemotional developmental outcomes were measured using validated tools such as the Strengths and Difficulties Questionnaire, the Nordic Five-to-Fifteen parent questionnaire and the Behaviour Rating Inventory of Executive Function—Preschool Version. Questionnaire data will be linked to national social and health registries to enable long-term follow-up. Statistical analyses will include longitudinal modelling to explore associations between screen use and developmental outcomes, with sensitivity analyses for robustness. The study’s large sample size provides high statistical power to detect meaningful effects.

The study adheres to ethical research guidelines, ensuring voluntary participation, confidentiality and compliance with data protection laws, with approvals from relevant authorities. Findings will be disseminated through peer-reviewed publications, conferences and plain-language summaries to engage stakeholders and the broader community.