Pediatrician perspectives on barriers and facilitators to discharge instruction comprehension and adherence for parents of children with medical complexity.

BACKGROUND: High rates of posthospitalization errors are observed in children with medical complexity (CMC). Poor parent comprehension of and adherence to complex discharge instructions can contribute to errors. Pediatrician views on common barriers and facilitators to parent comprehension and adherence are understudied. OBJECTIVE: To examine pediatrician perspectives on barriers and facilitators experienced by parents in comprehension of and adherence to inpatient discharge instructions for CMC. DESIGN, SETTINGS, AND PARTICIPANTS: We conducted a qualitative, descriptive study of attending pediatricians (n = 20) caring for CMC in inpatient settings (United States and Canada) and belonging to listservs for pediatric hospitalists/complex care providers. We used purposive/maximum variation sampling to ensure heterogeneity (e.g., hospital, region). MAIN OUTCOME AND MEASURES: A multidisciplinary team designed and piloted a semistructured interview guide with pediatricians who care for CMC. Team members conducted semistructured interviews via phone or video call. Interviews were audiorecorded and transcribed. We analyzed transcripts using content analysis; codes were derived a priori from a conceptual framework (based on the Pediatric Self-Management Model) and a preliminary transcript analysis. We applied codes and identified emerging themes. RESULTS: Pediatricians identified three themes as barriers and facilitators to discharge instruction comprehension and adherence: (1) regimen complexity, (2) access to the healthcare team (e.g., inpatient team, outpatient pediatrician, home nursing) and resources (e.g., medications, medical equipment), and (3) need for a family centered and health literacy-informed approach to discharge planning and education. Next steps include the assessment of parent perspectives on barriers and facilitators to discharge instruction comprehension and adherence for prents of CMC and the development of intervention strategies.

Communication Training for Pediatric Hospitalists and its Impact on Clinical Practice with Families Using Languages Other than English.

OBJECTIVE: Providing equitable health care for children of families speaking Language Other than English (LOE) relies on linguistic services, including interpretation and translation. Inadequate education on effectively utilizing linguistic services can lead to a knowledge gap and subsequent challenges in leveraging these services. This study aims to evaluate the educational training provided to pediatric hospitalists and its association with clinical practice. METHODS: A multicenter cross-sectional survey of pediatric hospitalists was conducted through the Pediatric Research in Inpatient Setting (PRIS) network, a hospital-based independent research network. The survey was distributed to PRIS site leads with one response per institution. Associations between educational training received on proper communication with families speaking LOE and practice behaviors were analyzed using chi-square or Fisher's exact tests. RESULTS: We received responses from 72 out of 112 PRIS hospital site-leads. Among the respondents, 56% did not receive training on communication during their Graduate Medical Education years (residency or fellowship); 47% did not receive training at their current workplace. Only 6% of those receiving workplace training reported annual updates or refresher courses. Furthermore, 26% of respondents rated the training as "good," while 35% considered it "fair." Respondents who received training during Graduate Medical Education years and at their workplace reported that they asserted/advocated more on behalf of patients speaking LOE than those who did not (P < .01). CONCLUSION: Pediatric hospitalists lack adequate training to communicate effectively with families speaking LOE. Increased training is associated with increased advocacy. Further work should explore increasing communication training and its effect on patient outcomes.

Management of Discharge Instructions for Children With Medical Complexity: A Systematic Review.

CONTEXT: Children with medical complexity (CMC) are at risk for adverse outcomes after discharge. Difficulties with comprehension of and adherence to discharge instructions contribute to these errors. Comprehensive reviews of patient-, caregiver-, provider-, and system-level characteristics and interventions associated with discharge instruction comprehension and adherence for CMC are lacking. OBJECTIVE: To systematically review the literature related to factors associated with comprehension of and adherence to discharge instructions for CMC. DATA SOURCES: PubMed/Medline, Embase, Cochrane Central Register of Controlled Trials, PsycInfo, Cumulative Index to Nursing and Allied Health Literature, Web of Science (database initiation until March 2023), and OAIster (gray literature) were searched. STUDY SELECTION: Original studies examining caregiver comprehension of and adherence to discharge instructions for CMC (Patient Medical Complexity Algorithm) were evaluated. DATA EXTRACTION: Two authors independently screened titles/abstracts and reviewed full-text articles. Two authors extracted data related to study characteristics, methodology, subjects, and results. RESULTS: Fifty-one studies were included. More than half were qualitative or mixed methods studies. Few interventional studies examined objective outcomes. More than half of studies examined instructions for equipment (eg, tracheostomies). Common issues related to access, care coordination, and stress/anxiety. Facilitators included accounting for family context and using health literacy-informed strategies. LIMITATIONS: No randomized trials met inclusion criteria. Several groups (eg, oncologic diagnoses, NICU patients) were not examined in this review. CONCLUSIONS: Multiple factors affect comprehension of and adherence to discharge instructions for CMC. Several areas (eg, appointments, feeding tubes) were understudied. Future work should focus on design of interventions to optimize transitions.

Pediatric Resident Communication of Hospital Discharge Instructions.

OBJECTIVE: Suboptimal provider-parent communication contributes to poor parent comprehension of pediatric discharge instructions, which can lead to adverse outcomes. Residency is a critical window to acquire and learn to utilize key communication skills, potentially supported by formal training programs or visual reminders. Few studies have examined resident counseling practices or predictors of counseling quality. Our objectives were to (1) examine pediatric resident counseling practices and (2) determine how formal training and presence of discharge templates with domain-specific prompts are associated with counseling. METHODS: We conducted a cross-sectional survey of a convenience sample of residents in the American Academy of Pediatrics Section on Pediatric Trainees. Outcomes included resident self-report of frequency of (1) counseling in domains of care and (2) use of health literacy-informed counseling strategies (pictures, demonstration, Teach Back, Show Back) (6-point scales; frequent = often/usually/always). Predictor variables were (1) formal discharge-related training (e.g., lectures) and (2) hospital discharge instruction template with space for individual domains. Logistic regression analyses, utilizing generalized estimating equations when appropriate to account for multiple domains (adjusting for resident gender, postgraduate year), were performed. KEY RESULTS: Few residents (N = 317) (13.9%) reported formal training. Over 25% of residents infrequently counsel on side effects, diagnosis, and restrictions. Resident reported use of communication strategies was infrequent: drawing pictures (24.1%), demonstration (15.8%), Teach Back (36.8%), Show Back (11.4%). Designated spaces in instruction templates for individual domains were associated with frequent domain-specific counseling (adjusted odds ratio [aOR] 4.1 [95% confidence interval: 3.5-4.8]). Formal training was associated with frequent Teach Back (aOR 2.6 [1.4-5.1]) and Show Back (aOR 2.7 [1.2-6.2]). CONCLUSIONS: Lack of formal training and designated space for domain-specific instructions are associated with suboptimal counseling at discharge by pediatric residents. Future research should focus on determining the best mechanisms for teaching trainees communication skills and optimizing written instruction templates to support verbal counseling. [HLRP: Health Literacy Research and Practice. 2023;7(4):e178-e186.].

PLAIN LANGUAGE SUMMARY: Pediatric residents infrequently counsel about several important domains of care or use health literacy-informed counseling strategies. Resident receipt of formal training in communication practices and presence of written instruction templates are associated with higher quality counseling. Future research is needed to determine how to better support trainees in learning how to provide high quality and effective communication with parents.

Linguistic Services for Hospitalized Children With Non-English Language Preference: A PRIS Network Survey.

BACKGROUND AND OBJECTIVES: Linguistic services, including verbal interpretation and written translation, are critical to providing equitable health care for families with non-English language preference (NELP). Despite evidence of provider disuse and misuse of linguistic services and resultant adverse outcomes, few studies have assessed the practices of pediatric hospitalists related to the use of linguistic services. Our objectives were to evaluate the current practices of communication and linguistic services used by pediatric hospitalists for hospitalized children with NELP and the barriers encountered in their use. METHODS: We conducted a multicenter cross-sectional survey of pediatric hospitalist site leaders through the Pediatric Research in Inpatient Setting network, an independent, hospital-based research network. The survey was created through an iterative process and underwent a face validation process with hospitalists and a survey methodology expert. RESULTS: We received responses from 72 out of 112 hospitalists (64%). Interpreter services were available widely; translation services were available in 49% of institutions. Difficulty accessing the services timely was reported as the most common barrier. Among respondents, 64% "strongly agree" or "somewhat agree" that they visit and give updates more frequently to English-speaking families than to NELP. Hospitalists reported using interpreter services "always" during 65% of admissions, 57% of discharges, and 40% on rounds. CONCLUSIONS: Families with NELP do not receive appropriate linguistic care when hospitalized. Providers update English-speaking families more frequently than non-English speaking families. Future directions include optimizing workflow to reduce the time constraints on hospitalists and increasing the timeliness and quality of interpreters and translators.

Using Quality Improvement Science to Promote Reliable Communication During Family-Centered Rounds.

BACKGROUND AND OBJECTIVES: Family-centered rounds (FCR) can lead to improved communication, satisfaction, and care delivery. However, FCR are variable in practice. Our primary goal was to implement and sustain consistent communication practices during FCR (a subset of all rounds in which parents were present) for patients on a pediatric hospital medicine service. We aimed to achieve 80% reliability for the following FCR practices: (1) discussion of risk factors and prevention strategies for hospital-acquired conditions (HACs), (2) discussion of discharge planning, and (3) asking families for questions. METHODS: Research assistants observed FCR on a pediatric acute care unit at an academic medical center and recorded if the rounding team discussed HAC risk factors, discussed discharge, or asked families for questions. Using the Model for Improvement, we performed multiple plan-do-study-act cycles to test and implement interventions, including (1) standardized note templates, (2) education via peer-led group discussions and team e-mails, and (3) routine provider feedback about performance. Data were analyzed by using statistical process control charts. RESULTS: From October 2017 to April 2019, reliability increased to >80% and sustained for (1) discussion of HAC risk factors (increased from 11% to 89%), (2) discussion of discharge planning (from 60% to 92%), and (3) asking families for questions (from 61% to 87%). Peer-led physician education, reminder e-mails, and physician engagement were the most impactful interventions corresponding to centerline shifts. CONCLUSIONS: Using multiple interventions, we achieved and sustained improvements in key communication-related elements of FCR. Future work will focus on determining if improved practices impact clinical outcomes.

Meds to Beds: A Quality Improvement Approach to Optimizing the Discharge Medication Process for Pediatric Patients.

BACKGROUND: Using an on-site pharmacy or medication to bedside (MTB) program allows patients to obtain prescriptions and education before discharge, potentially improving adherence and preventing harm. The aim of this project was to improve discharge processes for pediatric acute care patients by increasing the proportion of oral antibiotics (1) prescribed to the on-site pharmacy from 15% to 70% and (2) delivered to bedside from 0% to 50%. METHODS: The Model for Improvement was used to iteratively implement interventions: increased on-site pharmacy capabilities, MTB program creation and streamlined enrollment, and secure electronic health record (EHR) messaging between clinicians and pharmacy staff regarding prescriptions. Process measures were proportion of antibiotics prescribed to the on-site pharmacy and delivered to bedside. Outcomes included surveys of family satisfaction with discharge medication education and discharge medication-related safety reports. Discharge before noon (DBN) was the balancing measure. Aims were analyzed using statistical process control charts and chi-square tests. RESULTS: A total of 1,908 antibiotics were prescribed over 28-months. On-site pharmacy prescriptions increased from 15% to 46% after pharmacy capabilities increased, then to 86% after MTB program launch, optimized workflow, and initiation of EHR messaging. Bedside medication delivery increased from 0% to 58% with these interventions. Family satisfaction with discharge medication education and frequency of discharge medication-related safety reports was not significantly different pre- and postintervention. DBN varied throughout the study. CONCLUSION: Through clinician and pharmacy staff partnership, this initiative increased on-site pharmacy use and discharge antibiotics delivered to bedside. Key interventions included increased pharmacy capabilities, MTB program with streamlined workflow, and EHR-based communication.

Management of Pediatric Atopic Dermatitis by Primary Care Providers: A Systematic Review.

BACKGROUND: Primary care providers (PCPs), including pediatricians and general practitioners, are often the first to see children with eczema/atopic dermatitis (AD). Little is known about management of pediatric AD by PCPs and adherence to national guidelines. OBJECTIVE: To review existing literature examining management components of pediatric AD (topical corticosteroids [TCS], topical calcineurin inhibitors [TCIs], antihistamines, bathing, emollients, and diet) by PCPs. DATA SOURCES: PubMed/Medline and Embase. STUDY ELIGIBILITY CRITERIA: English-language articles dated 2015 to 2020 reporting outcomes addressing management of pediatric AD by PCPs. STUDY APPRAISAL AND SYNTHESIS METHODS: Two authors independently screened titles/abstracts, reviewed full-text articles, extracted relevant data, and evaluated study quality. Disagreements were resolved by a third author. RESULTS: Twenty articles were included. Surveys and national database analyses were the most common methodologies (n = 7 each). PCPs commonly prescribed TCS but had a preference for low-potency agents, overprescribed nonsedating antihistamines, and avoided TCIs. PCPs commonly recommended emollients, although this was not universal. Data characterizing nonmedication management were limited. LIMITATIONS: Most studies did not examine individual patient encounters, but rather relied on providers reporting their general behaviors. Provider behavior may vary based on country of practice. CONCLUSIONS AND IMPLICATIONS OF KEY FINDINGS: Knowledge and management gaps exist among PCPs in treating pediatric AD in key areas including knowledge of TCS safety profiles and prescribing of TCIs. The current literature is largely limited to small studies that evaluate prescribing behaviors with limited data characterizing nonmedication management, highlighting the need for future research in this area.

Brief Resolved Unexplained Event: Not Just a New Name for Apparent Life-Threatening Event.

OBJECTIVES: This study aimed to evaluate patients who presented to the pediatric emergency department with an apparent life-threatening event (ALTE) to (1) determine if these patients would meet the criteria for brief resolved unexplained event (BRUE), a new term coined by the American Academy of Pediatrics in May, 2016; (2) risk stratify these patients to determine if they meet the BRUE low-risk criteria; and (3) evaluate outcomes of patients meeting the criteria for BRUE. METHODS: We conducted a retrospective chart review of patients who presented to a large urban academic center pediatric emergency department with an ALTE from January 2013 to May 2015 (before the publication of the BRUE guideline). Children ≤12 months of age were identified by the International Classification of Diseases, Ninth/Tenth Revision. Two physician reviews were performed to determine if patients met the ALTE diagnostic criteria. Data were then extracted from these charts to complete objectives. RESULTS: Seventy-eight patients met the diagnostic criteria for ALTE. Only 1 of those patients met the diagnostic criteria for BRUE, but not for low-risk BRUE. This patient underwent an extensive inpatient evaluation and was eventually discharged after monitoring with a benign diagnosis. Most patients did not meet the criteria for BRUE because the event was not unexplained. CONCLUSIONS: Only 1 patient who presented to the ED with ALTE met the criteria for BRUE, and this patient did not meet the low-risk criteria. This study corroborates previous research on BRUE and continues to highlight the importance of conducting a thorough history and physical examination on all patients presenting to the ED with concerning events.

Factors Associated With Parental Participation in Family-Centered Rounds.

OBJECTIVES: Although families positively perceive family-centered rounds (FCR), factors associated with engagement have been examined in few studies. Our objective for this study was to test the hypothesis that inviting the parent to speak and nurse presence are associated with parent engagement during FCR. METHODS: We conducted a cross-sectional study with English-speaking parents (N = 199) of inpatients on the pediatric hospital medicine service at an academic medical center. We used a standardized checklist to record outcomes of engagement (number of questions asked and participation occurrences), predictor variables (team invited parent to speak, nurse presence), and other encounter-related variables. Parents were surveyed to assess parent and child characteristics and experiences during FCR. We examined parent, child, and encounter characteristic associations with the above outcomes using bivariate analyses and (for those associated in bivariate analyses) Poisson regressions. RESULTS: Inviting the parent to speak was independently associated with the number of questions asked (incident rate ratio [IRR] 1.4; 95% confidence interval [CI] 1.1-1.7). Trusting the medical team was inversely associated with questions asked (IRR 0.8; 95% CI 0.6-0.97). Factors associated with total participation included invitation for the parent to speak (IRR 1.5; 95% CI 1.3-1.6), nurse presence (IRR 1.3; 95% CI 1.1-1.5), white race (IRR 1.2; 95% CI 1.1-1.4), clerkship student presentation (IRR 1.2; 95% CI 1.03-1.3), and parent inclusion in rounding arrangement (IRR 1.5; 95% CI 1.05-2). CONCLUSIONS: Parents present during FCR are more engaged when invited to speak. Nurse presence was associated with total parent participation. Future studies to inform interventions to optimize engagement are warranted.

Parent Perspectives on Participation in Family-Centered Rounds and Informational Resource Use.

Objectives: Family-centered rounds (FCR) can improve communication and patient/family engagement. While use of informational resources (e.g., tablets, computers on wheels, paper notes) can guide FCR, there are limited data concerning parental perspectives on how use of these resources during FCR, or other factors, affect their engagement. Our objectives were to examine parental perspectives on factors that affect their participation during FCR and preferences for informational resources used. Methods: We performed a cross-sectional study with English-speaking parents (n = 200), of pediatric inpatients at an academic medical center, present during FCR. We surveyed parents to ascertain factors they believed affect their engagement during FCR. We asked about their preferences regarding informational resources used by the medical team. Responses were analyzed using descriptive statistics. Parents described their reasoning behind resource preferences, and we categorized these responses. Results: Parents reported that participation was affected by: clarity of the medical team's explanations (78.5%), understanding the information (75.5%), the child's health (74.5%), and being asked for their input (71%). Few (25%) parents believed the informational resource affects participation. Tablets were the preferred resource (24%) due to portability and ease of use, although 56% of parents had no preference. Conclusions: Parents of hospitalized children placed importance on delivery of clear information and an "invitation" to participate during FCR. The resource used by the team was less important, although tablets were most preferred. Next steps are to examine factors associated with objective measures of participation and further study FCR in families with limited English proficiency.

Health Literacy and Pediatric Health.

The chapters and reports in this book explore a wide variety of topics related to how health literacy can impact clinical practice and public health. While health literacy is relevant to healthcare issues across populations, it has unique implications in the field of pediatrics, where parents and other caregivers are responsible for managing their child's healthcare. Younger children have varying roles and involvement; over time, as children reach adolescence, they have an increasing understanding of and participation in their healthcare. This chapter will review the epidemiology of health literacy in parents, adolescents, and children, and how this compares to the general adult population. It will highlight unique considerations regarding health literacy and pediatric health. The chapter will then focus on the impact of health literacy and relevant health literacy-informed interventions on pediatric health. Finally, the chapter will discuss gaps in the literature and future directions.

Accuracy of Parent Perception of Comprehension of Discharge Instructions: Role of Plan Complexity and Health Literacy.

OBJECTIVE: Inpatient discharge education is often suboptimal. Measures of parents' perceived comprehension of discharge instructions are included in national metrics given linkage to morbidity; few studies compare parents' perceived and actual comprehension. We 1) compared parent perceived and actual comprehension of discharge instructions and 2) assessed associations between plan complexity and parent health literacy with overestimation of comprehension (perceive comprehension but lack actual comprehension). METHODS: Prospective cohort study of English/Spanish-speaking parents (n = 192) of inpatients ≤12 years old and discharged on ≥1 daily medication from an urban public hospital. We used McNemar's tests to compare parent perceived (agree/strongly agree on 5-point Likert scale) and actual comprehension (concordance of parent report with medical record) of instructions (domains: medications, appointments, return precautions, and restrictions). Generalized estimating equations were performed to assess associations between low parent health literacy (Newest Vital Sign score ≤3) and plan complexity with overestimation of comprehension. RESULTS: Medication side effects were the domain with lowest perceived comprehension (80%), while >95% of parents perceived comprehension for other domains. Actual comprehension varied by domain (41%-87%) and was lower than perceived comprehension. Most (84%) parents overestimated comprehension in ≥1 domain. Plan complexity (adjusted odds ratio 3.6; 95% confidence interval 2.9-4.7) and low health literacy (adjusted odds ratio 1.9; 1.3-2.6) were associated with overestimation of comprehension. CONCLUSIONS: Parental perceived comprehension of discharge instructions overestimated actual comprehension in most domains. Plan complexity and low health literacy were associated with overestimation of comprehension. Future interventions should incorporate assessment of actual comprehension and standardization of discharge instructions.

Parents' Use of Technologies for Health Management: A Health Literacy Perspective.

OBJECTIVE: Parent use of technology to manage child health issues has the potential to improve access and health outcomes. Few studies have examined how parent health literacy affects usage of Internet and cell phone technologies for health management. METHODS: Cross-sectional analysis of data collected as part of a randomized controlled experiment in 3 urban pediatric clinics. English- and Spanish-speaking parents (n = 858) of children ≤8 years answered questions regarding use of and preferences related to Internet and cell phone technologies. Parent health literacy was measured using the Newest Vital Sign. RESULTS: The majority of parents were high Internet (70.2%) and cell phone (85.1%) users (multiple times a day). A total of 75.1% had limited health literacy (32.1% low, 43.0% marginal). Parents with higher health literacy levels had greater Internet and cell phone use (adequate vs low: adjusted odds ratio [AOR], 1.7 [confidence interval, 1.2-2.5]) and were more likely to use them for health management (AOR, 1.5 [confidence interval, 1.2-1.8]); those with higher health literacy levels were more likely to use the Internet for provider communication (adequate vs marginal vs low: 25.0% vs 18.0% vs 12.0%, P = .001) and health-related cell phone apps (40.6% vs 29.7% vs 16.4%, P < .001). Overall preference for using technology for provider communication was high (∼70%) and did not differ by health literacy, although Internet and cell phone apps were preferred by higher literacy parents; no differences were seen for texting. CONCLUSIONS: Health literacy-associated disparities in parent use of Internet and cell phone technologies exist, but parents' desire for use of these technologies for provider communication was overall high and did not differ by health literacy.

Health Literacy in the Inpatient Setting: Implications for Patient Care and Patient Safety.

Health literacy plays a role in the events leading up to children's hospitalizations, during hospital admission, and after discharge. Hospitals and providers should use a universal precautions approach and routinely incorporate health-literacy-informed strategies in communicating with all patients and families to ensure that they can understand health information, follow medical instructions, participate actively in their own/their child's care, and successfully navigate the health care system. Interventions that incorporate health-literacy-informed strategies and that target patients/families and health care systems should be implemented to improve patient outcomes and patient-centered and family-centered care.

Discharge Instruction Comprehension and Adherence Errors: Interrelationship Between Plan Complexity and Parent Health Literacy.

OBJECTIVE: To examine associations between parent health literacy, discharge plan complexity, and parent comprehension of and adherence to inpatient discharge instructions. STUDY DESIGN: This was a prospective cohort study of English/Spanish-speaking parents (n = 165) of children ≤12 years discharged on ≥1 daily medication from an urban, public hospital. Outcome variables were parent comprehension (survey) of and adherence (survey, in-person dosing assessment, chart review) to discharge instructions. Predictor variables included low parent health literacy (Newest Vital Sign score 0-3) and plan complexity. Generalized estimating equations were used to account for the assessment of multiple types of comprehension and adherence errors for each subject, adjusting for ethnicity, language, child age, length of stay, and chronic disease status. Similar analyses were performed to assess for mediation and moderation. RESULTS: Error rates were highest for comprehension of medication side effects (50%), adherence to medication dose (34%), and return precaution (78%) instructions. Comprehension errors were associated with adherence errors (aOR, 8.7; 95% CI, 5.9-12.9). Discharge plan complexity was associated with comprehension (aOR, 7.0; 95% CI, 5.4-9.1) and adherence (aOR, 5.5; 95% CI, 4.0-7.6) errors. Low health literacy was indirectly associated with adherence errors through comprehension errors. The association between plan complexity and comprehension errors was greater in parents with low (aOR, 8.3; 95% CI, 6.2-11.2) compared with adequate (aOR, 3.8; 95% CI, 2.2-6.5) health literacy (interaction term P = .004). CONCLUSIONS: Parent health literacy and discharge plan complexity play key roles in comprehension and adherence errors. Future work will focus on the development of health literacy-informed interventions to promote discharge plan comprehension.

Association Between Outdoor Air Pollution Levels and Inpatient Outcomes in Pediatric Pneumonia Hospitalizations, 2007 to 2008.

OBJECTIVE: Pneumonia is a leading cause of pediatric admissions. Although air pollutants are associated with poor outcomes, few national studies have examined associations between pollutant levels and inpatient pediatric pneumonia outcomes. We examined the relationship between ozone (O3) and fine particulate matter with a diameter ≤2.5 µm (PM2.5) and outcomes related to disease severity. METHODS: In this cross-sectional study, we obtained discharge data from the 2007 to 2008 Nationwide Inpatient Sample and pollution data from the Air Quality System. Patients ≤18years with a principal diagnosis of pneumonia were included. Discharge data were linked to O3 and PM2.5 levels (predictors) from the patient's ZIP Code (not publicly available) from day of admission. Outcomes were mortality, intubation, length of stay (LOS), and total costs. We calculated weighted national estimates and performed multivariable analyses adjusting for sociodemographic and hospital factors. RESULTS: There were a total of 57,972 (278,871 weighted) subjects. Median PM2.5 level was 9.5 (interquartile range [IQR] 6.8-13.4) µg/m3. Median O3 level was 35.6 (IQR 28.2-45.2) parts per billion. Mortality was 0.1%; 0.75% of patients were intubated. Median LOS was 2 (IQR 2-4) days. Median costs were $3089 (IQR $2023-$5177). Greater levels of PM2.5 and O3 were associated with mortality, longer LOS, and greater costs. Greater O3 levels were associated with increased odds of intubation. CONCLUSIONS: Greater levels of O3 and PM2.5 were associated with more severe presentations of pneumonia. Future work should examine these relationships in more recent years and over a longer time period.