2.6 Subgroup analysis
The article performed the following subgroup analyses using treatment regimen as a variable: medication alone, medication combined with hyperbaric chamber therapy, and medication combined with intradural steroid injection. Changes in recovery rates and changes in ORs in people with SSHL suffering or free from vertigo were compared across treatment regimens. Unfortunately, we tried to quantify the heterogeneity of the study population to determine the relationships between hearing age, degree of hearing loss, hearing graph, treatment regimen, and level of hearing benefit; however, we had to abandon these subgroups because of the paucity of studies that could provide relevant information.
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