Thyroid hormones and glycaemic indices in euthyroid, hyperthyroid, hypothyroid, all type 2 diabetics and non-diabetic subjects

Bulletin of the National Research Centre

Table 2 Correlation analysis between HbA_lc and C-pep and thyroid hormones in all type 2, euthyroid, hypothyroid, hyperthyroid diabetics and non-diabetic subjects

Subjects	All type 2 diabetics		Euthyroid diabetics		Hypothyroid diabetics		Hyperthyroid diabetics		Non-diabetic controls
n	170		80		50		40		110
Analysis	r	p	r	p	r	p	r	p	r	p
HbAlc vs C-pep	0.111	0.107	0.021	0.832	0.155	0.322	0.011	0.935	0.029	0.709
HbAlc vs TSH	0.211	0.012*	0.051	0.251	0.330	0.031*	0.175	0.104	0.009	0.929
HbAlc vs FT4	0.083	0.326	−0.133	0.312	0.023	0.186	−0.133	0.312	0.023	0.786
HbAlc vs T4	0.194	0.038*	−0.099	0.610	0.379	0.012*	0.137	0.204	0.018	0.856
HbAlc vs T3	0.020	0.808	−0.162	0.218	−0.055	0.580	−0.066	0.551	0.055	0.580

HbA_lc glycated haemoglobin, TSH thyroid-stimulating hormone, FT₄ free thyroxine, T₄ total thyroxine, T₃ total triiodothyronine, FPG fasting plasma glucose, C-pep C-peptide, r correlation coefficient, p probability, n sample size
*Significant