Clinical Study

Microdecompression versus Open Laminectomy and Posterior Stabilization for Multilevel Lumbar Spine Stenosis: A Randomized Controlled Trial

Table 7

The association between the cost of operation and study groups.

Study variablesStudy groupTotalχ2 value
Group AGroup B

Cost of operation
 4500$33 (100.0)0 (0.0)33 (100.0)65.02<0.001
 6000$0 (0.0)32 (100.0)32 (100.0)
Performed in a governmental hospital (free)17 (48.6)18 (51.4)35 (100.0)
Total50 (100.0)50 (100.0)100 (100.0)

value ≤0.05 was significant.