Evaluations of knowledge, skills and practices of insulin storage and injection handling techniques of diabetic patients in Ethiopian primary hospitals

Table 3 The Mann-Whitney U test for the median scores of level of knowledge differences of between categories of predictor variables (N = 166)

Variables	Overall knowledge score
Variables	Median (IQR)	Mann-Whitney U test	Z-score	P-value
Sex
Male				0.291
Female
Residence
Urban	10 (8–12)	2410	−3.36	0.001*
Rural	8 (7–10)
Getting of insulin
Free	8 (7–10)	1874	−5.01	< 0.001*
Payment	10 (9–12)
Trained on insulin injection
Yes				0.075
No
Mocking the injection technique during first training
Yes	9.5 (8–12)	1959.5	−2.41	0.016*
No	8.5 (6–10)

* Statistically significant effect on patients’ knowledge levels at p < 0.05

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