Table 1 Characteristics of the training set and validation set populations.

From: A predictive nomogram based on triglyceride glucose index to body mass index ratio for low appendicular skeletal muscle mass

Items

Training set (n=2407)

Validation set (n=802)

Test statistic value

P value

Low ASMI(%)

512(21.3%)

152(19.0%)

1.971*

0.16

ASMI(kg/m2)

7.45±1.62

7.59±1.66

−2.177

0.03

Gender(male)

1610(66.9%)

522(65.1%)

0.875*

0.35

Age(year)

60.6±10.8

60.1±11.3

−1.199

0.231

Hight(cm)

166.90±7.55

166.45±7.55

1.465

0.143

Weight(kg)

68.22±12.55

67.90±11.96

0.639

0.523

BMI(kg/m2)

24.36±3.40

24.40±3.33

−0.261

0.794

HB(g/l)

136.00±17.67

136.00±16.53

−0.006

0.995

PLT(10^9/l)

203.94±66.39

204.64±54.88

0.344

0.731

ALB(g/l)

41.14±3.88

41.34±3.80

−1.301

0.193

UA(mmol/l)

356.13±96.87

355.37±93.11

0.196

0.845

Cr(umol/l)

69.30(60.40,79.40)

69.60(59.60,80.30)

−0.033#

0.974

FBG(mmol/l)

5.01(4.60,5.60)

5.00(4.60,5.60)

−0.638#

0.523

TC(mmol/l)

4.35±1.28

4.40±1.10

−0.958

0.338

TG(mmol/l)

1.27(0.92,1.89)

1.26(0.89,1.89)

−0.315#

0.753

HDL-C(mmol/l)

1.12(0.92,1.38)

1.12(0.93,1.39)

−0.904#

0.366

LDL-C(mmol/l)

2.56±0.89

2.60±0.88

−1.138

0.255

ALT(U/l)

20.00(14.00,28.00)

21.00(14.00,29.00)

−0.794#

0.427

AST(U/l)

21.00(17.00,25.00)

21.00(18.00,26.00)

−1.572#

0.116

SBP(mmHg)

130.5±16.0

129.9±15.9

1.518

0.129

DBP(mmHg)

80.3±11.3

80.0±11.4

0.661

0.509

Smoking(%)

751(31.2%)

248(30.9%)

0.022*

0.883

Alcohol consumption(%)

645(26.8%)

205(25.6%)

0.472*

0.492

TyG

8.64±0.67

8.63±0.66

0.325

0.745

TyG/BMI

0.36±0.05

0.36±0.05

0.666

0.506

  1. * For χ2 values, # for Z-values, and other test statistics for t-values.