Local Reference Ranges of Thyroid Volume in Sudanese Normal Subjects Using Ultrasound

Table 2

Comparison of thyroid volume studies.

Author	Gender	Age range (years)	Number of subjects	Thyroid volume (mL) ± SD	Country
Current study	75 M; 28 F	19–29	103	6.44±2.44	Sudan
Ivanac et al. [23]		20–38	51	10.68±2.83	Croatia
Ahidjo et al. [24]	71 M; 72 F	23–69	143	8.55±1.82	Nigeria
Chanoine et al. [25]		17–20	256	11.6±4.4	Belgium
Adibi et al. [26]	123 M; 77 F	37.27±11.80	200	9.53±3.68	Iran