Open fenestration discectomy versus microscopic fenestration discectomy for lumbar disc herniation: a randomized controlled trial

Table 6 Association between study group and the recurrence

Study variables	Study group		Total	P-value	Odds	95% CI
Study variables	Group A	Group B	Total	P-value	Odds	95% CI
Recurrence				1.000	1.30	0.313-5.404
Yes	5 (16.7)	4 (13.3)	9 (15.0)
No	25 (83.3)	26 (86.7)	51 (85.0)
Total	30 (100.0)	30 (100.0)	200 (100.0)

*P value ≤0.05 was significant
The mean differences of time of the recurrence between study groups including (group A and Group B) were shown in Table 7. There were no significant differences in means of time of the recurrence between study groups (29 months after operation in group A versus 27 months after operation in group B) (P = 0.778)

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