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Table 1 Demographic and clinical characteristics of patients, frequency and percentage (n (%)) from Chi square test, mean ± standard deviation from independent t-test, N = 74

From: The analgesic efficacy of bilateral superficial cervical plexus block for thyroid surgery under general anesthesia: a prospective cohort study

VariablesBlock group (n = 37)Non-block group (n = 37)p-value
Age (years)35.1 ± 9.334.6 ± 10.00.85
BMI20.1 ± 2.420.4 ± 3.30.74
Sex0.30
 Male10 (27)6 (16.3)
 Female27 (73)31 (83.7)
ASA class0.99
 I30 (81)30 (81)
 II7 (19)7 (19)
Diagnosis0.63
 Simple nodular goiter22 (59.4)12 (32.4)
 Simple colloid goiter6 (16.2)6 (16.2)
 Multi-nodular goiter8 (21.6)16 (43.2)
 Thyroid cancer1 (2.7)3 (8.1)
Size of thyroid mass (cm2)31.8 ± 24.237.5 ± 26.20.43
Type of thyroidectomy0.12
 Lobectomy0 (0)0 (0)
 Subtotal22 (59.4)12 (32.4)
 Near total12 (32.4)21 (56.7)
 Total2 (5.4)1 (2.7)
 Extended neck dissection1 (2.7)3 (8.1)
Incision length (cm)9.2 ± 2.89.1 ± 2.10.96
Duration of surgery (min)120.2 ± 36.6123.4 ± 41.40.77
Duration of anesthesia140.4 ± 38.0145.6 ± 43.80.66
Preemptive analgesia at induction0.57
 Acetaminophen and diclofenac4 (16)3 (12)
 Acetaminophen, diclofenac and opioids21 (84)22 (88)