PURPOSE
This study was done to identify the effects of nurse-physician collaboration on nursing performance and organizational commitment in intensive care unit (ICU) nurses.
METHODS
A cross-sectional survey was used and data were collected from 203 ICU nurses working in two advanced general hospitals and two general hospitals. Data were analyzed using descriptive statistics, independent t-test, One-way ANOVA, Scheffé test, Pearson correlation coefficients and Hierarchical multiple regression with SPSSWIN 23.0 program.
RESULTS
The sub-domains of nursephysician collaboration were as follows: 3.77±0.51 for sharing of patient information, 3.36±0.65 for decision-making process on the cure or care, and 3.20±0.72 for relationship between nurse and physician. Nurse-physician collaboration was significantly positively correlated with nursing performance and organizational commitment. Regression analysis showed that nurse-physician collaboration explained an additional 24.9%p of nursing performance and an additional 13.4%p of organizational commitment. 'Sharing of patient information' and 'Relationship between nurse and physician' were significant predictors of nursing performance. 'Relationship between nurse and physician' was a significant predictor of organizational commitment.
CONCLUSION
These results provide evidence that the collaboration between nurses and physicians should be enhanced in terms of sharing patient information and mutual respect, to improve nursing performance and organizational commitment of ICU nurses.

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