Table 1.
Participant characteristics in subjects with non-sarcopenia and sarcopenia.
| Overall (n = 11761) | Non-sarcopenia (n = 7880) | Sarcopenia (n = 3881) | P-value | ||||
|---|---|---|---|---|---|---|---|
| Age [years]a | 45.30 | ±0.25 | 42.06 | ±0.26 | 53.19 | ±0.33 | <0.001 |
| BMI [kg/m2] | 27.85 | ±0.09 | 26.18 | ±0.08 | 31.90 | ±0.13 | <0.001 |
| CRP [mg/dL] | 0.40 | ±0.01 | 0.31 | ±0.01 | 0.60 | ±0.02 | <0.001 |
| Hemoglobin [g/dL] | 14.56 | ±0.04 | 14.53 | ±0.04 | 14.64 | ±0.05 | <0.001 |
| ASM [%] | 27.65 | ±0.07 | 29.03 | ±0.07 | 24.29 | ±0.07 | <0.001 |
| RDW [%] | 12.59 | ±0.01 | 12.51 | ±0.02 | 12.79 | ±0.02 | <0.001 |
| Sex [n (%)]b | |||||||
| Male | 5965 | (49.5) | 3896 | (48.4) | 2069 | (52.3) | 0.002 |
| Female | 5796 | (50.5) | 3984 | (51.6) | 1812 | (47.7) | |
| Race/ethnicity [n (%)] | |||||||
| Non-Hispanic White | 6123 | (73.9) | 3868 | (71.6) | 2255 | (79.5) | <0.001 |
| Non-Hispanic Black | 2241 | (9.8) | 1949 | (12.3) | 292 | (3.7) | |
| Mexican American | 2509 | (6.7) | 1420 | (6.1) | 1089 | (8.0) | |
| Other | 888 | (9.6) | 643 | (10.0) | 245 | (8.8) | |
| Education [n (%)] | |||||||
| <High School | 3382 | (17.5) | 2051 | (16.2) | 1331 | (20.8) | <0.001 |
| High School | 2804 | (25.6) | 1828 | (24.3) | 976 | (29.0) | |
| >High School | 5575 | (56.8) | 4001 | (59.6) | 1574 | (50.2) | |
| Household income [n (%)] | |||||||
| PIR <1 | 1938 | (11.8) | 1306 | (12.0) | 632 | (11.4) | 0.017 |
| PIR 1 to <3 | 4843 | (35.2) | 3081 | (34.0) | 1762 | (38.2) | |
| PIR ≥3 | 4980 | (52.9) | 3493 | (54.0) | 1487 | (50.4) | |
| Smoking pack-years | |||||||
| Never | 6484 | (54.3) | 4513 | (56.3) | 1971 | (49.4) | <0.001 |
| <20 | 3559 | (31.7) | 2515 | (33.3) | 1044 | (28.0) | |
| ≥20 | 1718 | (14.0) | 852 | (10.5) | 866 | (22.6) | |
| MVPA [n (%)] | |||||||
| Low | 7751 | (61.2) | 4853 | (56.6) | 2898 | (72.1) | <0.001 |
| High | 4010 | (38.8) | 3027 | (43.4) | 983 | (27.9) | |
| Diabetes [n (%)] | |||||||
| No | 10473 | (92.6) | 7314 | (95.5) | 3159 | (85.6) | <0.001 |
| Yes | 1288 | (7.4) | 566 | (4.5) | 722 | (14.4) | |
| Hypertension [n (%)] | |||||||
| No | 7442 | (70.4) | 5620 | (78.1) | 1822 | (51.9) | <0.001 |
| Yes | 4319 | (29.6) | 2260 | (21.9) | 2059 | (48.1) | |
| CVD [n (%)] | |||||||
| No | 10547 | (92.4) | 7342 | (95.2) | 3205 | (85.6) | <0.001 |
| Yes | 1214 | (7.6) | 538 | (4.8) | 676 | (14.4) | |
aWeighted mean ± SE from survey mean (all such values).
bWeighted percentages from survey frequency (all such values).
P-values were calculated using t-tests for continuous variables and Rao-Scott chi-square tests for categorical variable according to survey procedures.
BMI, body mass index; CRP, C-reactive protein; ASM, appendicular skeletal muscle mass; RDW, red blood cell distribution width; PIR, poverty income ratio; MVPA, moderate-to-vigorous physical activity; CVD, cardiovascular disease.