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Table 1 Correlation analysis between FPG and C-pep, HbAlc and thyroid profile in all type 2 diabetics, euthyroid, hypothyroid, hyperthyroid diabetic and non-diabetic control subjects

From: Thyroid hormones and glycaemic indices in euthyroid, hyperthyroid, hypothyroid, all type 2 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

FPG vs HbAlc

0.221

0.007*

0.163

0.104

0.382

0.011*

0.295

0.011*

0.295

0.709

FPG vs C-pep

0.224

0.004*

0.111

0.850

0.194

0.076

0.481

0.001**

0.018

0.606

FPG vs TSH

0.101

0.233

0.610

0.118

0.118

0.136

0.132

0.281

0.048

0.688

FPG vs FT4

0.127

0.133

0.133

0.315

0.055

0.580

0.153

0.160

0.003

0.973

FPG vs T4

0.072

0.333

0.093

0.341

0.093

0.341

0.137

0.204

0.163

0.104

FPG vs T3

0.049

0.562

0.027

0.176

0.027

0.176

0.132

0.104

0.003

0.973

  1. FPG fasting plasma glucose, HbAlc glycated haemoglobin, C-pep C-peptide, TSH thyroid-stimulating hormone, FT4 free thyroxine, T4 total thyroxine, T3 total triiodothyronine