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. 2021 Apr 19;2021:5572121. doi: 10.1155/2021/5572121

Table 2.

Baseline demographics and perioperative data (n = 41).

Characteristics Values
Age (years) 49.6 ± 15.2

Gender
 Female 22 (53.7%)
 Male 19 (46.3%)
 Preoperative anxiety and/or depression 4 (9.8%)

Preoperative headache
 Tension-type headache 3 (7.3%)
 Migraine 2 (4.9%)

Preoperative regional management
 Scalp nerve blockade 17 (41.5%)
 Scalp infiltration 19 (46.3%)
 N/A 5 (12.2%)

Side of surgical incision
 Left 21 (51.2%)
 Right 20 (48.8%)

Etiology for surgery
 Tumor resection 18 (43.9%)
 Decompression 13 (29.3%)
 Others 10 (22.0%)

Surgical approach
 Retrosigmoid 23 (56.1%)
 Suboccipital 16 (39.0%)
 Others 2 (4.9%)
 Operation duration (hours) 6.3 ± 1.1