Irisin levels in patients with prediabetes mellitus: A case-control study and meta-analysis

Table 2 Correlation of irisin with other metabolic parameters

	r value	P value
Irisin (ng/mL) ELK	-0.183	0.294
Body mass index	0.185	0.286
Gender	-0.04	0.818
Age	-0.026	0.884
Waist circumference	0.098	0.577
Hip circumference	-0.054	0.757
Waist-to-hip ratio	0.203	0.241
Fatty liver	0.350	0.039
Family history of DM	0.152	0.382
Glu0	0.168	0.336
Glu0.5	0.421	0.012
Glu1	0.307	0.073
Glu2	0.154	0.377
Glu3	0.207	0.232
GCG0	0.045	0.796
GCG0.5	0.066	0.707
GCG1	0.009	0.961
GCG2	-0.044	0.802
GCG3	-0.076	0.664
Ins0	-0.032	0.857
Ins0.5	0.018	0.919
Ins1	-0.063	0.718
Ins2	0.028	0.874
Ins3	0.254	0.141
CP0	0.046	0.793
CP0.5	-0.007	0.969
CP1	-0.049	0.779
CP2	0.003	0.987
CP3	0.184	0.289
Smoking history	-0.136	0.437
Alcohol drinking history	0.101	0.564

DM: Diabetes mellitus; Glu0: Fasting blood glucose; Glu0.5: Oral glucose tolerance test 0.5-hour post-load blood glucose; Glu1: Oral glucose tolerance test 1-hour post-load blood glucose; Glu2: Oral glucose tolerance test 2-hour post-load blood glucose; Glu3: Oral glucose tolerance test 3-hour post-load blood glucose; Ins0: Fasting insulin; Ins0.5: Oral glucose tolerance test 0.5-hour post-load blood insulin; Ins1: Oral glucose tolerance test 1-hour post-load blood insulin; Ins2: Oral glucose tolerance test 2-hour post-load blood insulin; Ins3: Oral glucose tolerance test 3-hour post-load blood insulin; CP0: Fasting C-peptide; CP0.5: Oral glucose tolerance test 0.5-hour post-load blood C-peptide; CP1: Oral glucose tolerance test 1-hour post-load blood C-peptide; CP2: Oral glucose tolerance test 2-hour post-load blood C-peptide; CP3: Oral glucose tolerance test 3-hour post-load blood C-peptide; GCG0: Fasting glucagon; CGC0.5: Oral glucose tolerance test 0.5-hour post-load blood glucagon; GCG1: Oral glucose tolerance test 1-hour post-load blood glucagon; GCG2: Oral glucose tolerance test 2-hour post-load blood glucagon; GCG3: Oral glucose tolerance test 3-hour post-load blood glucagon.