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Table 1 General characteristics of study participants

From: Interaction of estradiol and vitamin D with low skeletal muscle mass among middle-aged and elderly women

Characteristics

Total

Low SMM

(n = 287)

Normal SMM

(n = 2738)

P value

Age (years)

56.27 ± 9.86

62.59 ± 9.54

55.60 ± 9.66

< 0.001

Marital status

    

Married

2741 (90.6)

238 (82.9)

2503 (91.4)

< 0.001

Widowed

274 (9.1)

48 (16.7)

226 (8.3)

Divorce and unmarried

10 (0.3)

1 (0.3)

9 (0.3)

Education

    

Primary school and below

2228 (73.7)

241 (84.0)

1987 (72.6)

< 0.001

Junior high school

714 (23.6)

40 (13.9)

674 (24.6)

High school and above

83 (2.7)

6 (2.1)

77 (2.8)

Weight (kg)

60.94 ± 9.19

48.88 ± 5.87

62.20 ± 8.53

< 0.001

Height (cm)

155.95 ± 5.96

151.27 ± 5.69

156.44 ± 5.77

< 0.001

BMI (kg/m2)

25.05 ± 3.45

21.42 ± 2.80

25.43 ± 3.28

< 0.001

WC (cm)

86.39 ± 9.10

77.46 ± 7.52

87.33 ± 8.74

< 0.001

ASMI (kg/m2)

6.58 ± 0.69

5.37 ± 0.30

6.71 ± 0.59

< 0.001

FM (kg)

21.80 ± 6.45

16.76 ± 5.43

22.33 ± 6.32

< 0.001

Cholesterol (mmol/L)

4.93 (4.30, 5.59)

4.95 (4.27, 5.63)

4.93 (4.30, 5.58)

0.925

HDL-C (mmol/L)

1.37 (1.18, 1.58)

1.39 (1.21, 1.63)

1.37 (1.18, 1.58)

0.211

LDL-C (mmol/L)

2.86 (2.35, 3.34)

2.77 (2.27, 3.37)

2.87 (2.35, 3.34)

0.446

Triglyceride (mmol/L)

1.48 (1.05, 2.11)

1.43 (0.99, 1.91)

1.49 (1.06, 2.13)

0.005

Glucose (mmol/L)

5.44 (4.98, 6.29)

5.48 (4.96, 6.73)

5.44 (4.98, 6.27)

0.315

Dyslipidemia (%)

1034 (34.2)

94 (32.8)

940 (34.3)

0.592

Estradiol Level (pg/mL)

14.81 (5.00, 33.94)

10.75 (5.00, 17.58)

15.38 (5.00, 36.21)

< 0.001

Vitamin D concentration (ng/ml)

12.07 (8.91, 15.74)

10.70 (8.14, 14.61)

12.20 (8.98, 15.81)

< 0.001

VD deficiency (%)

2724 (90.0)

263 (91.6)

2461 (89.9)

0.345

Menopausal Status (%)

    

Pre-menopausal

408 (13.5)

15 (5.2)

393 (14.3)

< 0.001

Perimenopausal

1104 (36.5)

61 (21.3)

1043 (38.1)

Postmenopausal

1513 (50.0)

211 (73.5)

1302 (47.6)

Smoking (%)

36 (1.2)

5 (1.7)

31 (1.1)

0.365

Alcohol intake (%)

417 (13.8)

34 (11.8)

383 (14.0)

0.317

Physical activity (%)

    

Low

946 (31.3)

85 (29.6)

861 (31.5)

0.817

Medium

1563 (51.6)

152 (53.0)

1411 (51.5)

High

516 (17.1)

50 (17.4)

466 (17.0)

Dietary energy (Kcal)

1645.63 (1113.80, 2190.93)

1456.63 (809.05, 2056.00)

1660.25 (1132.69, 2202.77)

0.002

Dietary protein (g)

59.66 (33.43, 85.88)

50.34 (22.41, 79.22)

60.92 (35.21, 86.58)

< 0.001

Dietary fat (g)

77.70 (50.73, 108.85)

70.63 (42.72, 102.84)

78.96 (52.06, 109.36)

0.001

Dietary carbohydrate (g)

206.27 (130.79, 331.39)

177.01 (100.79, 283.36)

209.21 (131.19, 334.93)

< 0.001