Table 5.
Change in BMI during the first year of injury among 518 individuals classified as underweight and normal weight during rehabilitation (BMIE < 25 kg/m2)
| N | BMI during rehabilitation (kg/m2) | BMI at year 1 (kg/m2) | BMI change (kg/m2) | P value for BMI change | P value* | Adjusted P value** | |
|---|---|---|---|---|---|---|---|
| Overall | 21.7 (2.23) | 22.2 (3.52) | 0.49 | <0.01 | – | – | |
| Age | |||||||
| 18–30 | 260 | 21.3 (2.31)a | 21.5 (3.46)b | 0.24 | 0.17 | 0.06 | 0.05 |
| 31–45 | 99 | 22.1 (2.11) | 23.3 (3.96) | 1.14 | <0.01 | ||
| 46–60 | 109 | 22.0 (2.00) | 22.7 (3.06) | 0.66 | 0.01 | ||
| 61–88 | 50 | 22.0 (2.24) | 22.1 (3.16) | 0.13 | 0.78 | ||
| Sex | |||||||
| Male | 414 | 21.7 (2.22) | 22.2 (3.42) | 0.48 | <0.01 | 0.83 | 0.77 |
| Female | 104 | 21.6 (2.28) | 22.1 (3.89) | 0.55 | 0.13 | ||
| Race/ethnicity | |||||||
| White | 308 | 21.8 (2.22) | 22.1 (3.54) | 0.34 | 0.05 | 0.20 | 0.69 |
| Black | 151 | 21.4 (2.24) | 22.1 (3.53) | 0.71 | <0.01 | ||
| Hispanic | 42 | 21.7 (2.04) | 22.9 (3.66) | 1.16 | 0.02 | ||
| Other | 17 | 21.1 (2.56) | 20.9 (2.13) | −0.22 | 0.70 | ||
| Marital status | |||||||
| Single | 291 | 21.3 (2.34)a | 21.5 (3.28)b | 0.22 | 0.16 | 0.04 | 0.05 |
| Married | 158 | 22.1 (2.08) | 22.8 (3.62) | 0.70 | 0.01 | ||
| Other | 69 | 22.2 (1.76) | 23.4 (3.74) | 1.15 | <0.01 | ||
| Education | |||||||
| <High school | 104 | 21.7 (2.28) | 22.8 (3.82) | 1.08 | <0.01 | 0.03 | 0.08 |
| High school | 308 | 21.6 (2.25) | 22.1 (3.55) | 0.50 | <0.01 | ||
| ≥College | 98 | 22.0 (2.06) | 21.9 (3.06) | −0.06 | 0.81 | ||
| Occupation | |||||||
| Employed | 297 | 21.8 (2.29) | 22.3 (3.48) | 0.54 | <0.01 | 0.43 | 0.94 |
| Student/trainee | 73 | 21.3 (2.09) | 21.4 (3.27) | 0.08 | 0.83 | ||
| Other | 146 | 21.6 (2.15) | 22.2 (3.70) | 0.62 | 0.02 | ||
| Neurologic level | |||||||
| AIS DE | 145 | 21.9 (2.16) | 22.7 (3.56) | 0.79 | <0.01 | 0.24 | 0.10 |
| Para ABC | 193 | 21.6 (2.27) | 21.8 (3.45) | 0.23 | 0.27 | ||
| Tetra ABC | 175 | 21.5 (2.23) | 22.0 (3.51) | 0.52 | 0.03 | ||
| Vertebral injury | |||||||
| Yes | 434 | 21.7 (2.21) | 22.1 (3.54) | 0.44 | <0.01 | 0.37 | 0.77 |
| No | 83 | 21.5 (2.32) | 22.3 (3.40) | 0.77 | 0.02 | ||
| Associated injury | |||||||
| Yes | 248 | 21.5 (2.28) | 22.0 (3.76) | 0.55 | <0.01 | 0.62 | 0.79 |
| No | 269 | 21.8 (2.17) | 22.2 (3.26) | 0.42 | 0.01 | ||
| Spinal surgery | |||||||
| Yes | 394 | 21.8 (2.16) | 22.1 (3.54) | 0.36 | 0.02 | 0.09 | 0.12 |
| No | 123 | 21.3 (2.42) | 22.2 (3.43) | 0.89 | <0.01 | ||
| Rehospitalization | |||||||
| Yes | 144 | 21.7 (2.14) | 22.3 (3.93) | 0.52 | 0.04 | 0.89 | 0.96 |
| No | 330 | 21.6 (2.29) | 22.1 (3.31) | 0.49 | <0.01 | ||
aP < 0.05, comparison of BMI during rehabilitation across groups.
bP < 0.05, comparison of BMI at year 1 across groups.
*Comparison of BMI changes across groups.
**Comparison of BMI changes across groups, after adjusting for baseline weight and listed variables.