Table 3.

Safety–simplicity (SS) factors

Binary correlation between pen and conventional methods and SS factors
SS factors	Pain perception	Bruises	Hypoglycemia	Ease of use	Reading the scale
Correlation	54%	30%	0%	55%	35%
P-value	0.001	0.073	1	0	0.038
Logistic regression analysis for SS factors; G (−2 log likelihood): 21.510
SS factors	Pain perception	Bruises	Hypoglycemia	Ease of use	Reading the scale	Constant
Coefficient	3.98	2.14	−2.20	5.32	0.97	−5.67
Standard error	1.58	1.39	1.73	2.23	1.42	2.27
P-value	0.01	0.12	0.20	0.20	0.49	0.01
Logistic regression analysis for SS factors; G (−2 log likelihood): 23.553
SS factors	Pain perception	Bruises	Ease of use	Constant
Coefficient	3.33	1.53	4.32	−5.40
Standard error	1.26	1.10	1.62	1.94
P-value	0.008	0.164	0.008	0.005

Note: G: most used indicator in logistic regression to quantify the likelihood.