Effectiveness of topical oxygen therapy in wound healing for patients with diabetic foot ulcer

Figure 1.

Comparison of wound grades of patients before and after the implementation of usual care in the control group_

Day	Mean	SD	Friedman’s (Chi square)	P value	Verbal interpretation
Control group			5.7	P = 0.058 >0.05*	Not significant
Day 0	2.40	0.563
Day 7	2.43	0.626
Day 14	2.67	0.802

Comparison of wound grades of patients in the control and experimental groups per day of evaluation_

Day and participants	Mean	SD	P value	Interpretation
Day 0			P = 0.788 >0.05*	Not significant
Control	2.40	0.563
Experimental	2.33	0.661
Day 7			P = 0.019 <0.05*	Significant
Control	2.43	0.626
Experimental	1.93	0.828
Day 14			P = 0.000 <0.05*	Significant
Control	2.67	0.802
Experimental	1.47	0.937

Comparison of wound grade of patients before and after the implementation of usual care and topical oxygen therapy in the experimental group_

Day	Mean	SD	Friedman’s test (Chi-square)	P value	Verbal interpretation
Experimental group			36.083	P = 0.000 <0.05*	Significant
Day 0	2.33	0.661
Day 7	1.93	0.828
Day 14	1.47	0.937

Status of patients’ wounds in the control and experimental groups_

Wagner wound classification	Control group						Experimental group
	Day 0		Day 7		Day 14		Day 0		Day 7		Day 14
	F	%	F	%	F	%	F	%	F	%	F	%
Grade 0					6	20
Grade 1	3	10.0	11	36.7	7	23.3	1	3.3	1	3.3	2	6.7
Grade 2	14	46.7	10	33.3	14	46.7	16	53.3	16	53.3	10	33.3
Grade 3	13	43.3	9	30.0	3	10.0	13	43.3	12	40.0	14	46.7
Grade 4									1	3.3	4	13.3

Patient’s wound grade before and after the implementation of usual wound care and topical oxygen therapy for both control and experimental groups_

Day	Mean	SD	Wagner score in numerical value	Verbal interpretation of Wagner classification
Control group
Day 0	2.40	0.563	2	Deep ulceration
Day 7	2.43	0.626	2	Deep ulceration
Day 14	2.67	0.802	3	Deep ulceration with abscess/osteomyelitis
Experimental group
Day 0	2.33	0.661	2	Deep ulceration
Day 7	1.93	0.828	2	Deep ulceration
Day 14	1.47	0.937	1	Superficial lesion