Key result
Preoperative instruction improved postoperative outcomes with a mean effect size of 0.44, placing the average instructed patient at the 66th percentile of uninstructed patients.
Why the study?
Does preoperative instruction improve postoperative outcomes in surgical patients?
Population
68 studies pooling 4,018 patients undergoing surgery
Comparison
Preoperative instruction vs No preoperative instruction
Design
Meta-analysis
Authors
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Supports routine preoperative instruction to enhance recovery; confirms moderate benefits in Level 1 meta-analysis.
Meta-Analysis (n=4,018)
Does preoperative instruction improve postoperative outcomes in surgical patients?
Standardized Mean Difference: 0.44
Preoperative instruction generally improves postoperative outcomes, particularly in patients with high levels of fear or anxiety, though effects vary widely across studies.
Donna Hathaway (1986) conducted a meta-analysis in Patients undergoing surgery (n=4,018). Preoperative instruction vs. No preoperative instruction was evaluated on Postoperative outcomes (mean effect size 0.44). Preoperative instruction improved postoperative outcomes with a mean effect size of 0.44, placing the average instructed patient at the 66th percentile of uninstructed patients.
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