Table 1.
Baseline Characteristics of Participants by Frailty Index Subgroups.
| Baseline Characteristic |
Total (N=2356) |
0<FI≤0.1 (N=494) |
0.1<FI≤0.2 (N=1048) |
0.2<FI≤0.3 (N=576) |
FI>0.3 (N=238) |
P valuea |
|---|---|---|---|---|---|---|
| Age, y | ||||||
| Mean (SD) | 78.8 (5.2) | 76.7 (4.6) | 78.4 (5.0) | 80.2 (5.1) | 81.8 (5.1) | <0.001 |
| Median (IQR) | 78.5 [74.1, 82.8] | 75.3 [72.7, 80.2] | 77.8 [73.9, 82.3] | 80.8 [76.1, 83.8] | 82.3 [78.6, 85.9] | |
| Men, N (%) | 1182 (50.2%) | 212 (42.9%) | 519 (49.5%) | 314 (54.5%) | 137 (57.6%) | <0.001 |
| Education, y | ||||||
| Mean (SD) | 13.9 (2.9) | 14.4 (2.8) | 13.9 (2.9) | 13.9 (3.0) | 13.4 (3.0) | <0.001 |
| Median (IQR) | 13 [12, 16] | 14 [12, 16] | 13 [12, 16] | 13 [12, 16] | 13 [12, 15] |
FI= frailty index; SD= standard deviation; IQR= interquartile range; Y = years.
a
P-values shown are comparing the four groups (each pairwise comparison was significant for age, sex, and education, p<0.02).