Table 2.

Influence of fasting and calorie intake on TSH level

Median (P25, P75)	Diet intake group	Glucose intake group	Fasting group	P value
TSH_7am (mU/L)	2.3 (1.4, 2.9)	2.2 (1.5, 3.1)	1.9 (1.3, 3)	0.664
TSH_9am (mU/L)	1.5 (1, 2.1) ^***	1.4 (0.9, 2.1) ^***	1.7 (1.2, 3.1) ^***	0.094
TSH variation (mU/L)	-0.71 (-1.02, -0.36) ^###	-0.73 (-1.05, -0.44) ^&&&	-0.1 (-0.26, 0.04)	< 0.001
TSH variation rate (%)	-32.4 (-39.3, -25.3) ^###	-31.5 (-40.7, -24) ^&&&	-5.2 (-16.1, 1.6)	< 0.001

Variables were presented as medians (P25, P75) and compared by Kruskal–Wallis test among groups

^*** P < 0.001, comparing withTSH_7am; ^### P < 0.001, comparing with the fasting group; ^&&& P < 0.001, comparing with the fasting group

TSH variation = TSH_9am- TSH_7am; TSH variation rate = (TSH_9am- TSH_7am)/ TSH_7am;