Table 3 SPPB test scores according to iron deficiency
SPPB items | N | Without ID N = 364 | N | With ID N = 495 | N | Total N = 859 | P-value |
|---|---|---|---|---|---|---|---|
Dimensions, median (IQR) | |||||||
Balance score | 284 | 3 (1; 4) | 377 | 2 (1; 4) | 661 | 2 (1; 4) | 0.0115 |
Gait speed score | 284 | 3 (1; 4) | 377 | 2 (1; 4) | 661 | 2 (1; 4) | 0.0445 |
Repeated chair stand score | 284 | 1 (0; 3) | 377 | 1 (0; 2) | 661 | 1 (0; 2) | 0.0101 |
Global score, median (IQR) | 284 | 7 (4; 9) | 377 | 5 (3; 9) | 661 | 6 (3; 9) | 0.0058 |
Global score interpretation, n (%) | |||||||
Poor performance (SPPB 0–6) | 284 | 138 (48.6) | 377 | 228 (60.5) | 661 | 366 (55.4) | 0.0076 |
Intermediate performance (SPPB 7–9) | 284 | 91 (32.0) | 377 | 87 (23.1) | 661 | 178 (26.9) | |
High performance (SPPB 10–12) | 284 | 55 (19.4) | 377 | 62 (16.4) | 661 | 117 (17.7) | |