Table 3. Effect of surgical technique on clinical success.

	Anterior				Posterior
			95% CI				95% CI
Study, first author and year	n	Clinical success	Lower	Upper	n	Clinical success	Lower	Upper
Brodsky, 199213	17	0.59	0.35	0.79	16	0.88	0.63	0.97
Carreon, 200619	–	–	–	–	–	–	–	–
Caspar, 199921	37	0.84	0.68	0.93	–	–	–	–
Coric, 199718	18	0.83	0.59	0.94	–	–	–	–
Farey, 199022	–	–	–	–	19	0.74	0.50	0.87
Kuhns, 200523	–	–	–	–	33	0.72	0.52	0.86
Liu, 201224	–	–	–	–	38	0.84	0.69	0.93
Lowery, 199520	20	0.40	0.21	0.62	17	0.82	0.57	0.94
Mutoh, 199325	–	–	–	–	–	–	–	–
Newman 199331	7	0.71	0.33	0.93	–	–	–	–
Phillips, 199726	16	0.88	0.61	0.93	6	0.93	0.42	0.99
Siambanes, 199827	–	–	–	–	9	0.11	0.015	0.50
Toohey, 200630	–	–	–	–	18	0.86	0.70	0.94
Tribus, 199928	16	0.81	0.55	0.94	–	–	–	–
Zdeblick, 199729	35	0.86	0.70	0.94	–	–	–	–
Total		0.77	0.64	0.86		0.80	0.72	0.86

Abbreviation: CI, confidence interval.