Frailty prevalence among older inpatients with interstitial lung disease was 38.02%, with age, polypharmacy, poor sleep quality, and dyspnea identified as independent risk factors.
Key Findings
Results
The prevalence of frailty among older inpatients with interstitial lung disease was 38.02%.
242 older ILD patients were recruited using a cluster sampling method between April 2023 and April 2024
Frailty was defined using the Fried Frailty Phenotype (FFP) Scale, with frailty classified as FFP ≥ 3
Participants were categorized into a frailty group (FFP ≥ 3) and a non-frailty group (FFP < 3)
Recruitment took place in a hospital inpatient setting
Results
Age was identified as an independent risk factor for frailty in older ILD inpatients.
Multivariate analysis yielded an odds ratio of 1.064 for age (P < 0.05)
The finding suggests that each additional year of age increases the odds of frailty by approximately 6.4%
Age was one of four independent risk factors identified in multivariate logistic regression
Results
Polypharmacy was an independent risk factor for frailty in older ILD inpatients.
Multivariate analysis yielded an odds ratio of 2.479 for polypharmacy (P < 0.05)
Polypharmacy approximately doubled the odds of frailty compared to non-polypharmacy
Polypharmacy was assessed as part of comprehensive clinical data collection via a General Data Questionnaire
Results
Poor sleep quality was an independent risk factor for frailty in older ILD inpatients.
Multivariate analysis yielded an odds ratio of 5.687 for poor sleep quality (P < 0.05)
Sleep quality was measured using the Pittsburgh Sleep Quality Index (PSQI)
Poor sleep quality was associated with nearly a 5.7-fold increase in the odds of frailty
Results
Dyspnea was the strongest independent risk factor for frailty in older ILD inpatients.
Multivariate analysis yielded an odds ratio of 10.316 for dyspnea (P < 0.05)
Dyspnea was measured using a Dyspnea Scale
Dyspnea was associated with more than a 10-fold increase in the odds of frailty, making it the strongest risk factor identified
Dyspnea is a common and prominent symptom of interstitial lung disease
Methods
Comprehensive clinical data collection included measures of anxiety, depression, sleep quality, and self-efficacy in addition to frailty assessment.
Data were collected using the General Data Questionnaire, the Fried Frailty Phenotype (FFP) Scale, the Dyspnea Scale, the Hospital Anxiety and Depression Scale (HADS), the Pittsburgh Sleep Quality Index (PSQI), and the Self-Efficacy for Managing Chronic Disease Scale
Cluster sampling was used to recruit 242 participants over a 12-month period (April 2023 to April 2024)
The study design allowed for multivariate analysis to identify independent risk factors while controlling for multiple variables
What This Means
This research suggests that frailty — a state of increased vulnerability and reduced ability to cope with health stressors — is very common among older hospital patients with interstitial lung disease (ILD), a group of conditions that cause progressive lung scarring. Nearly 4 in 10 older ILD patients studied (38%) met criteria for frailty based on an established assessment tool called the Fried Frailty Phenotype Scale. The study identified four factors that independently increased a patient's likelihood of being frail: older age, taking multiple medications at once (polypharmacy), poor sleep quality, and difficulty breathing (dyspnea). Notably, dyspnea was the strongest of these risk factors, increasing the odds of frailty more than tenfold.
This research suggests that healthcare providers — particularly nurses who have frequent contact with these patients — should routinely screen for frailty and pay close attention to symptoms like breathing difficulty and sleep problems in older adults with ILD. The finding that poor sleep quality and polypharmacy are modifiable risk factors is noteworthy, as these may be targets for intervention to help prevent or slow the development of frailty in this vulnerable population.
The study was conducted at a single hospital using a sample of 242 patients over one year in China, so findings may not apply universally to all settings or populations. Nonetheless, the results add to growing evidence that frailty management should be a key component of care for older adults with chronic lung diseases, and that addressing breathing symptoms and sleep quality may be particularly important in this effort.
Chen Y, Zhu X, Wei J, Gu X, Fei J, Liu Q. (2026). Analysis of risk factors for frailty in older inpatients with interstitial lung disease.. BMC pulmonary medicine. https://doi.org/10.1186/s12890-026-04154-w