Bronchopneumonia, an infection that seeds the lung’s smallest airways with patches of inflammation, remains one of the leading causes of pediatric hospitalization worldwide, particularly in low- and middle-income countries. In-hospital treatment has improved dramatically, but post-discharge care is often fragmented. Children may experience incomplete recovery, caregivers may struggle with anxiety about managing symptoms alone, and unplanned medical visits are common. China’s National Health Commission has promoted an initiative known as Internet + Nursing Care, which encourages the integration of mobile platforms into nursing services. Yet evidence on whether WeChat-based extended nursing actually improves outcomes for pediatric respiratory conditions has been limited.

The study team, led by Zhu Zheng, Yanhong Xie, Guokai Li, and Meiling Chen, analyzed records from 240 children aged six months to six years who were diagnosed with bronchopneumonia and discharged from a single tertiary hospital between June 2023 and December 2025. Using a before-and-after historical control design, the researchers sorted children by the post-discharge care they had actually received. Those discharged between April 2024 and December 2025, after the WeChat program launched, formed the WeChat Extended Nursing Care Group of 120 children. Those discharged between June 2023 and March 2024, before the program began, formed the Conventional Extended Care Group, also 120 children, who received standard discharge education and telephone follow-up.

The WeChat program’s structure was deliberately practical. Families in the intervention group received daily scheduled online nursing consultations, regular push notifications containing health knowledge, and peer support through a dedicated WeChat group. All follow-up assessments had been performed as part of routine clinical care and were extracted retrospectively for the analysis. To reduce bias from the non-randomized design, the researchers applied propensity score matching, a statistical technique that pairs patients from each group who had similar baseline characteristics. The matching yielded 108 matched pairs, a 90 percent match rate, creating a more balanced comparison than raw group totals would allow.

The results, evaluated with a hierarchical testing procedure, showed a striking difference at the 14-day mark. The recovery rate in the WeChat group reached 99.1 percent, compared with 88.0 percent in the conventional group, an odds ratio of 14.642 with a 95 percent confidence interval of 1.88 to 114.038 and a P value of 0.010. The researchers calculated a number needed to treat of 9.0, meaning roughly nine children would need the WeChat program for one additional child to recover by day 14. At seven days post-discharge, however, recovery rates were identical between groups at 77.8 percent each, suggesting the digital program’s benefit emerges in the second week rather than immediately.

The authors themselves flagged an important statistical caveat. The wide confidence interval around the 14-day odds ratio indicates substantial imprecision in the effect estimate, and its lower bound of 1.880 suggests the true benefit may be modest rather than dramatic. This kind of uncertainty is common in retrospective studies with moderate sample sizes, and it underscores why the researchers call for prospective randomized trials before the intervention is widely adopted. Still, the direction of the effect was consistent across multiple secondary outcomes, which strengthens the overall picture.

Caregiver self-efficacy, measured by the General Self-Efficacy Scale, was significantly higher in the WeChat group, with a mean score of 27.4 versus 23.4, a beta coefficient of 3.981, a 95 percent confidence interval of 2.847 to 5.115, and a P value below 0.001. Families in the WeChat group also reported higher satisfaction, with 70.4 percent giving scores of four or above compared with 41.7 percent in the conventional group. Most notably from a health-system perspective, the rate of non-planned revisits within 30 days was substantially lower in the WeChat group, with an odds ratio of 0.336, a 95 percent confidence interval of 0.147 to 0.765, and a P value of 0.009.

To probe whether unmeasured confounding could explain the apparent benefit, the researchers performed a sensitivity analysis using E-values, a statistical measure of how strong an unobserved confounder would need to be to nullify the observed association. The E-value point estimate was 28.78, with a confidence interval lower bound of 3.17, indicating the findings were robust to unmeasured confounding. In practical terms, some unmeasured factor would need to be nearly 29 times more prevalent in one group than the other to explain away the difference, which is unlikely given the matched design.

The study’s retrospective before-and-after design remains its central limitation. Children were not randomly assigned to the WeChat program, and the historical control group predates the intervention, so temporal changes in clinical practice, seasonal variation in illness severity, or shifts in caregiver demographics could theoretically influence results. The propensity score matching addresses observable differences, but only randomization can fully eliminate selection bias. The authors are explicit that their findings suggest the intervention may be a feasible approach for integrating digital health platforms into pediatric transitional care, not definitive proof of effectiveness.

Nevertheless, the study arrives at a moment when digital health platforms are being rapidly folded into routine care across China and beyond. The Internet + Nursing Care initiative represents a policy-level bet that mobile messaging can extend the reach of nursing staff without requiring families to return to the hospital. If prospective randomized studies confirm the pattern seen here, structured WeChat-based nursing support could become a standard component of post-discharge care for children with bronchopneumonia, offering a low-cost, scalable way to improve recovery, boost caregiver confidence, and reduce the burden of unplanned revisits on families and health systems alike.

Subject of Research: Effect of WeChat-based "Internet + Extended Nursing Care" on rehabilitation outcomes of children with bronchopneumonia: a retrospective cohort study

Article Title: Effect of WeChat-based "Internet + Extended Nursing Care" on rehabilitation outcomes of children with bronchopneumonia: a retrospective cohort study

Article References: Zheng, Z., Xie, Y., Zhan, Z., You, Y., Li, G., & Chen, M. (2026). Effect of WeChat-based "Internet + Extended Nursing Care" on rehabilitation outcomes of children with bronchopneumonia: a retrospective cohort study. BMC Pediatrics. https://doi.org/10.1186/s12887-026-07853-9

Image Credits: AI Generated

DOI: 10.1186/s12887-026-07853-9

Keywords: Effect, WeChat-based, Internet, Extended, Nursing, Care, rehabilitation, outcomes, children, bronchopneumonia, retrospective, cohort