. 2026 Feb 2;26:139. doi: 10.1186/s12871-026-03618-0

Table 4.

Comparison between the two studied groups according to Boezaat surgical filed grading

Boezaat surgical filed grading	Group TN(n = 30)	p₀	Group PC(n = 30)	p₀	U	p
Boezaat surgical filed grading	Median (IQR)	p₀	Median (IQR)	p₀	U	p
15 min.	3 (3 – 4)		3 (3 – 4)		450.0	1.000
30 min.	2 (2 – 3)	<0.001^*	2 (2 – 3)	<0.001^*	450.0	1.000
45 min.	2 (2 – 2)	<0.001^*	2 (2 – 2)	<0.001^*	450.0	1.000
60 min.	2 (2 – 2)	<0.001^*	2 (2 – 2)	<0.001^*	450.0	1.000
75 min.	2 (2 – 2)	<0.001^*	2 (2 – 2)	<0.001^*	450.0	1.000
90 min.	2 (2 – 2)	<0.001^*	2 (2 – 2)	<0.001^*	450.0	1.000
105 min.	2 (2 – 2)	<0.001^*	2 (2 – 2)	<0.001^*	450.0	1.000
120 min.	2 (2 – 2)	<0.001^*	2 (2 – 2)	<0.001^*	450.0	1.000
135 min.	2 (2 – 2)	<0.001^*	2 (2 – 2)	<0.001^*	450.0	1.000
150 min.	2 (2 – 2)	<0.001^*	2 (2 – 2)	<0.001^*	420.0	1.000
165 min.	2 (2 – 2)	<0.001^*	2 (2 – 2)	<0.001^*	420.0	1.000
180 min.	2 (2 – 2)	0.001^*	2 (2 – 2)	0.001^*	91.00	1.000

IQR Inter quartile range, U Mann Whitney test, p₀ p value for Friedman test for comparing between 15 min. and each period, p p value for comparing between the two studied groups

*: Statistically significant at p ≤ 0.05