Hospital nurse understaffing and short work experience: associations with mortality among patients

Abstract Background Determining and maintaining optimal staffing level in hospitals is crucial, as understaffing may have serious consequences and even increase mortality risk among patients. There is no consensus, however, on the optimal way to determine staffing requirements in hospitals as patients’ care needs vary between wards and days. Nurse work experience may also affect quality of care and ultimately patients’ survival but research on this topic is scarce. Methods Administrative register data on patients (N = 254,308) and employees of 40 hospital units was used in one hospital district in Finland from years 2013-2019. Both nurse understaffing and nurse work experience were measured with two different indicators in each unit-day. Mixed-effects survival models were used to analyse the associations of these exposures with mortality at patient-level, when adjusted for patients’ characteristics, such as age, sex and comorbidities. Results Preliminary results showed that every one percent increase in the cumulative proportion of understaffed days - measured as low nursing hours relative to planned - was associated with 1.002-fold mortality risk among patients (95% CI, 1.000-1.004, p-value=0.044). Short work experience was not associated with increased risk of death. Conclusions This study supports previous findings on the associations between nurse understaffing and increased mortality risk among patients in Finland although no association with mortality was found for the other three staffing characteristics. However, the average daily shares of actualized nursing hours relative to planned hours were quite high in hospital units. An indicator based on actualized relative to planned working hours in routine administrative data could be useful in evaluating understaffing in hospitals. Key messages • Adequate level of nursing professional in hospitals is related to patient survival. • It is also crucial of develop efficient ways to evaluate understaffing in hospitals.

Background: D/deaf and hard of hearing (D&HoH) populations are disproportionally affected by physical and mental health problems while facing barriers to accessing health services. These barriers stem from communication challenges with healthcare providers, who are often unprepared to meet their specific needs. This study aimed to develop and evaluate an intervention to improve healthcare providers' skills to communicate with these patients.

Methods:
This study featured a participative action research design. Consistently, the intervention was developed through iterative phases together with the target populations and key stakeholders. The finale version was tested in healthcare workers in Canton of Vaud in Switzerland. Participants completed a questionnaire before (T0) and 6 months after (T1) the intervention, assessing perceived knowledge of deafness and hard of hearing and tools to improve communication, selfefficacy on how to communicate with D&HoH patients and institutional benefits (application frequency of communication rules and tools).

Results:
The final intervention aimed to increase participants' 1) awareness of D&HoH experience and communication needs, 2) knowledge of the tools and basic rules to improve communication. Two D&HoH trainers led one half-day intervention among 28 healthcare providers (e.g., nurses, pharmacists; mean age = 43.6). Paired-sample t-tests revealed significant increases in knowledge between T0 and T1, t (23) = -7.81, p < .001 and in self-efficacy, t (24) = -10.23, p < .001, whereas there was no significant difference between institutional benefits at T0 and T1.

Conclusions:
Although findings suggest the intervention is a promising means to increase perceived knowledge and self-efficacy on how communicating with D&HoH patients, complementary approaches, such as a resource person within the institutions providing day-to-day support to the teams besides the intervention, may be necessary to induce institutional changes.

Key messages:
Future research should implement the intervention more broadly within inpatient and outpatient settings in Switzerland to increase knowledge on how communicating with D&HoH patients. Intervention implementation should be complemented by an additional structural approach to induce sustainable changes in practice and evaluated over 12 months to ensure sustainability. Abstract citation ID: ckac129.179 Hospital nurse understaffing and short work experience: associations with mortality among patients Background: Determining and maintaining optimal staffing level in hospitals is crucial, as understaffing may have serious consequences and even increase mortality risk among patients. There is no consensus, however, on the optimal way to determine staffing requirements in hospitals as patients' care needs vary between wards and days. Nurse work experience may also affect quality of care and ultimately patients' survival but research on this topic is scarce.

Methods:
Administrative register data on patients (N = 254,308) and employees of 40 hospital units was used in one hospital district in Finland from years 2013-2019. Both nurse understaffing and nurse work experience were measured with two different indicators in each unit-day. Mixed-effects survival models were used to analyse the associations of these exposures with mortality at patient-level, when adjusted for patients' characteristics, such as age, sex and comorbidities.

Results:
Preliminary results showed that every one percent increase in the cumulative proportion of understaffed days -measured as low nursing hours relative to planned -was associated with 1.002-fold mortality risk among patients (95% CI, 1.000-1.004, p-value = 0.044). Short work experience was not associated with increased risk of death.

Conclusions:
This study supports previous findings on the associations between nurse understaffing and increased mortality risk among patients in Finland although no association with mortality was found for the other three staffing characteristics. However, the average daily shares of actualized nursing hours relative to planned hours were quite high in hospital units. An indicator based on actualized relative to planned working hours in routine administrative data could be useful in evaluating understaffing in hospitals.

Key messages:
Adequate level of nursing professional in hospitals is related to patient survival. It is also crucial of develop efficient ways to evaluate understaffing in hospitals.