Table 1 Baseline characteristics of the Study Population.

From: Relationship Between Body Mass Index and Low Skeletal Muscle Mass in Adults Based on NHANES 2011–2018

Variable

Category

Total

Sarcopenia

Non-Sarcopenia

Age (years)

Median (IQR)

39 (29, 49)

36 (25.25, 49)

39 (29, 49)

BMI (kg/m²)

Median (IQR)

27.7 (23.9, 32.5)

20.6 (19, 22.4)

28.5 (24.9, 33.1)

Gender

Male

3774 (50.62%)

255 (37.83%)

3519 (51.9%)

 

Female

3681 (49.38%)

419 (62.17%)

3262 (48.1%)

Ethnicity

Mexican American

1047 (14.04%)

59 (8.75%)

988 (14.57%)

 

Other Hispanic

748 (10.03%)

62 (9.2%)

686 (10.12%)

Non-Hispanic White

2815 (37.76%)

262 (38.87%)

2553 (37.65%)

Non-Hispanic Black

1590 (21.33%)

45 (6.68%)

1545 (22.78%)

 

Non-Hispanic Asian

967 (12.97%)

227 (33.68%)

740 (10.91%)

 

Other Race - Including Multi-Racial

288 (3.86%)

19 (2.82%)

269 (3.97%)

Education Level

Low

1282 (17.2%)

99 (14.69%)

1183 (17.45%)

 

Middle

1622 (21.76%)

130 (19.29%)

1492 (22%)

 

High

4551 (61.05%)

445 (66.03%)

4106 (60.55%)

Income-to-Poverty Ratio

< 1

1715 (23%)

162 (24.04%)

1553 (22.9%)

 

≥ 1

5740 (77%)

512 (75.96%)

5228 (77.1%)

Hypertension

Yes

1755 (23.47%)

88 (12.76%)

1667 (24.54%)

 

No

5700 (76.46%)

588 (87.24%)

5112 (75.39%)

Diabetes

Yes

580 (7.38%)

46 (4.6%)

534 (7.65%)

 

No

6865 (90.76%)

684 (94.07%)

6181 (90.43%)

Smoking Status

Yes

3016 (40.43%)

253 (37.39%)

2763 (40.73%)

 

No

4439 (59.52%)

423 (62.61%)

4016 (59.21%)

Alcohol Consumption

Yes

5645 (75.68%)

460 (68.25%)

5185 (76.42%)

 

No

1810 (24.25%)

214 (31.75%)

1596 (23.51%)

  1. The continuous variables were presented as median (interquartile range, IQR)