Assessment of the Effects of Low-Level Laser Therapy on the Thyroid Vascularization of Patients with Autoimmune Hypothyroidism by Color Doppler Ultrasound

Table 3

Statistical analysis of power Doppler ultrasound results for the trial groups: paired tests.

	Pre-LLLT	Post-LLLT		Preplacebo	Postplacebo
Variable	L group, 𝑛=23	L group, 𝑛=23	𝑃 value^●	P group, 𝑛=20	P group, 𝑛=20	𝑃 value^●
	mean (CI of 95%)	mean (CI of 95%)		mean (CI of 95%)	mean (CI of 95%)
Thyroid parenchyma vascularization	2.00; (1.56–2.44)	1.87; (1.49–2.25)	0.466	1.75; (1.26–2.34)	2.30; (2.01–2.59)	0.015 *

LLLT: low-level laser therapy; CI: confidence interval; ^●: paired Student’s 𝑡-tests were used for compare the results pre- and after intervention for each group; *: 𝑃<0.05.