2.3 Treatment groups and complications
The single complication group (SCG) was defined as all children diagnosed with complicated mastoiditis and SPA alone. Multi complications group (MCG) included patients with additional intratemporal or intracranial complication (peri-sinus fluid/abscess, epidural abscess, SST, and acute meningitis).
Complications were defined as either a SPA or any clinical finding on physical examination and/or by imaging (post-contrast head CT or head MRI) pre/intra-operatively.