Table 3.

Comparison between the studied groups according to retention laten

Retention latency	CG	HG	UOG	BOG	P
After 1 week	N=10	N=9	N=9	N=9	0.019*
Mean ± SD	300.0±0.0	232.11±105.71	183.44±138.61	144.67±95.21
Median (min, max)	300 (300, 300)	300 (43, 300)	300 (19, 300)	100 (67, 300)
Sig. bet. Groups	CG-UOG*, CG-BOG**
After 1 month	N=10	N=9	N=9	N=8	<0.001*
Mean ± SD	300.0±0.0	206.89±140.06	165.33±133.49	15.63±8.47
Median (min, max)	300 (300, 300)	300 (8, 300)	148 (10, 300)	14.00 (4, 30)
Sig. bet. Groups	CG-UOG**, CG-BOG***, HG-BOG*, UOG-BOG**
p1	1.000	0.713	0.741	0.001*

χ²: Chi square for Kruskal Wallis test. Sig. between groups was done using Mann Whitney test. p₁: p value for Mann Whitney test for comparing between 1 week and 1 month in each group.

^*Statistically significant at P≤0.0;

^**Statistically significant at P≤0.01;

^***Statistically significant at P≤0.001.