Investigating the influence of selected leadership styles on patient safety and quality of care: a systematic review and meta-analysis.

Background: There is a popular belief that transformational leadership (TL) and servant leadership (SL) styles are influential in establishing a patient safety (PS) culture and improving the quality of care (QC). However, there are very few review articles investigating this phenomenon.

Purpose: This study performs a systematic review and meta-analysis to ascertain the influences of TL and SL on PS and QC.

Methods: Published research work indexed in the two popular databases, that is, Scopus and PubMed, was selected based on the inclusion criteria. The systematic review was performed as per Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Data such as country of publication, year, data type, research design, target population, sample size and conclusion were selected from the studies.

Results: There are pieces of evidence suggesting a medium to strong effect of TL on PS. At the same time, the effect of TL on QC is not direct but indirect and is mediated through variables such as fostering positive organisational culture and enhancing organisational outcomes such as job satisfaction, leader effectiveness and willingness of nurses to spend some extra effort. A total of 27 studies were selected for final evaluation and 11 reported a relationship between TL and PS. The 'Fisher r-to-z transformed correlation coefficients' ranged from 0.3769 to 0.8673. Similarly, a total of four studies reported the relationship between TL and QC, 'Fisher r-to-z transformed correlation coefficients' ranged from 0.0802 to 0.5101, with most estimates being positive (80%).

Conclusion: TL has a strong and positive effect on PS but a positive and weak effect on the QC. There is not much evidence to establish SL's influence on PS and QC.