Table 1 Baseline subject characteristics (mean with SD or proportion) by quintiles of body mass index (BMI)
From: Association between body mass index and mortality among institutionalized elderly adults in Japan
Quintiles of BMI (kg/m2) | P for trend | |||||
|---|---|---|---|---|---|---|
Q1 (<17.3) | Q2 (17.3–19.2) | Q3 (19.3–21.1) | Q4 (21.2–23.5) | Q5 (23.6≤) | ||
Women (%) | 77.7 | 77.3 | 75.6 | 75.6 | 78.0 | 0.7259 |
Age (years) | 84.8 (SD 8.2) | 85.2 (SD 7.9) | 84.8 (SD 8.1) | 83.8 (SD 8.0) | 82.7 (SD 8.0) | <0.0001 |
Height (cm) | 148.1 (SD 9.0) | 146.6 (SD 9.2) | 145.7 (SD 9.5) | 145.0 (SD 9.3) | 143.7 (SD 9.7) | <0.0001 |
Weight (kg) | 34.4 (SD 4.9) | 39.8 (SD 5.2) | 43.2 (SD 5.7) | 47.1 (SD 6.2) | 54.1 (SD 8.3) | <0.0001 |
BMI (kg/m2) | 15.7 (SD 1.3) | 18.4 (SD 0.6) | 20.3 (SD 0.5) | 22.3 (SD 0.7) | 26.1 (SD 2.3) | <0.0001 |
Total Barthel Index | 18.4 (SD 29.6) | 28.1 (SD 34.3) | 37.7 (SD 36.8) | 47.3 (SD 38.3) | 60.4 (SD 35.3) | <0.0001 |
No or slight dementia (%) | 11.8 | 15.4 | 21.8 | 30.8 | 43.4 | <0.0001 |