Nurse-to-patient ratios and readiness for hospital discharge: A moderated mediation model.
Shuang-Yan Lei, Jia-Ru Sun, Cai-Hua Wang and 4 others
PMID 38268295WHAT IT FOUND
High nurse-to-patient ratios were linked to lower patient readiness for discharge, but only because they widened the gap between how nurses and patients assessed that readiness.
Nurses consistently rated patients as more ready than the patients rated themselves, especially on knowledge.
Key findings
01Nurses rated patients' readiness for discharge significantly higher than the patients rated themselves across all four dimensions, with the largest gap in knowledge.
02The negative association between higher nurse-to-patient ratios and patient readiness was fully explained by increased nurse-patient assessment differences, not by a direct effect.
03Patient age and gender moderated this pathway: higher ratios widened assessment gaps more in older patients and men, while those gaps lowered readiness scores more in younger patients and women.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
This is a single-centre cross-sectional survey, so it cannot prove that higher nurse-to-patient ratios caused worse discharge readiness or that the assessment gap was the mechanism. All readiness data came from self-report questionnaires completed four hours before discharge, with no follow-up of actual post-discharge complications, readmissions, or patient outcomes. The sample was drawn from one cancer hospital in Shaanxi Province using convenience sampling, which limits how well the findings transfer to other settings or patient groups. The nurse-patient difference score was calculated by simple subtraction of two self-reported totals; the authors note that more specialized tools are still needed to properly evaluate these assessment differences. Important background variables such as the actual quality of discharge teaching were not measured, so they could be driving both the assessment gap and readiness scores.
Declared interests
Funded by the Department of Science and Technology of Shaanxi Province. The authors declare no conflicts of interest.
The easy way to misread this
Do not read the finding that nurse-to-patient ratios were negatively associated with readiness as proof that adding staff will directly improve discharge outcomes. The study is cross-sectional and shows only that higher ratios coincided with wider nurse-patient assessment gaps, which in turn coincided with lower patient readiness scores. No patient was followed after discharge, so there is no evidence here that this pathway actually caused PICC complications or readmissions.