Educational video for self-care with arteriovenous fistula in renal patients: randomized clinical trial.
Natália Ramos Costa Pessoa, Jackeline Kérollen Duarte de Sales, Clemente Neves Sousa and 3 others
PMID 38922264WHAT IT FOUND
Knowledge and self-care practice improved in both the video group and the usual care group.
The video did not outperform standard verbal education. Attitude did not change significantly in either group.
Key findings
01Significant increases in knowledge and practice were identified in both the control and intervention groups during follow-up.
02Statistical significance between groups was only found for practice scores on the seventh day, with no significant differences for knowledge or attitude at any time point.
03No statistical significance was observed for attitude towards self-care in either group.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The final sample size (55 patients) was lower than planned for the primary knowledge outcome (planned for 94 patients), resulting in low statistical power (56%). The control group received usual care that included verbal education with content similar to the video, making it difficult to isolate the effect of the video itself. Follow-up was short (only 14 days), so long-term retention of knowledge and behavior change is unknown. Self-reported measures of knowledge and practice may be subject to cognitive bias, where patients overestimate their own knowledge.
Declared interests
Supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Grant #437078/2018-3, Brazil. No conflicts of interest declared.
The easy way to misread this
Do not conclude that the educational video is ineffective. The study found that knowledge and practice improved in both groups, but the control group also received standard verbal education. The lack of difference between groups suggests the video may not add benefit over existing verbal counseling, or that the study was too small to detect a difference. It does not prove the video is worthless, nor does it prove it is superior.