Diagnostic potential of ultrasound in carpal tunnel syndrome with different etiologies: correlation of sonographic median nerve measures with electrodiagnostic severity

Table 4 Comparative study of CTS ultrasonography measurement in relation to different etiology

Ultrasound measurement	Mean and SD	Etiology	P-value
Idiopathic CSAd	17.59 ± 4.84	Diabetes	0.002
Idiopathic CSAd	17.59 ± 4.84	Hypothyroidism	0.6
Diabetes CSAd	22.01 ± 6.5	Idiopathic	0.002
Diabetes CSAd	22.01 ± 6.5	Hypothyroidism	0.07
Hypothyroidism CSAd	18.5 ± 4.47	Idiopathic	0.057
Hypothyroidism CSAd	18.5 ± 4.47	Diabetes	0.07
Idiopathic ∆CSA	8.52 ± 4.55	Diabetes	0.08
Idiopathic ∆CSA	8.52 ± 4.55	Hypothyroidism	0.5
Diabetes ∆CSA	11.2 ± 5.1	Idiopathic	0.08
Diabetes ∆CSA	11.2 ± 5.1	Hypothyroidism	0.3
Hypothyroidism ∆CSA	9.48 ± 3.75	Idiopathic	0.5
Hypothyroidism ∆CSA	9.48 ± 3.75	Diabetes	0.3
Idiopathic Mean CSAdp	13.57 ± 3.37	Diabetes	0.02
Idiopathic Mean CSAdp	13.57 ± 3.37	Hypothyroidism	0.07
Diabetes Mean CSAdp	16.48 ± 5.24	Idiopathic	0.02
Diabetes Mean CSAdp	16.48 ± 5.24	Hypothyroidism	0.6
Hypothyroidism Mean CSAdp	15.76 ± 4.67	Idiopathic	0.07
Hypothyroidism Mean CSAdp	15.76 ± 4.67	Diabetes	0.6

Cross sectional area distal (CSAd), cross sectional area difference (ΔCSA), mean average of cross sectional area distal and proximal (CSApd), P value was calculated by ANOVA test

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