Table 1 Baseline characteristics of study participants by intervention group and baseline IL-6 level
Physical activity | Health education | |||||
|---|---|---|---|---|---|---|
Higher IL-6 subgroupa(n = 321) | Lower IL-6 subgroupa(n = 323) | All n = 644 | Higher IL-6 subgroupa(n = 331) | Lower IL-6 subgroupa(n = 323) | All n = 654 | |
Age, years, mean (SD) | 78.9 ± 5.3 | 78.2 ± 5.1 | 78.6 ± 5.2 | 79.1 ± 5.2 | 79.1 ± 5.3 | 79.1 ± 5.3 |
≥ 80 years | 133 (41.4) | 129 (39.9) | 262 (40.7) | 144 (43.5) | 146 (45.2) | 290 (44.3) |
Women | 203 (63.2) | 217 (67.2) | 420 (65.2) | 204 (61.6) | 232 (71.8) | 436 (66.7) |
Education | ||||||
≤ High school | 121 (37.7) | 125 (38.8) | 246 (38.3) | 111 (33.6) | 113 (35.1) | 224 (34.4) |
College | 136 (42.4) | 121 (37.6) | 257 (40.0) | 136 (41.2) | 129 (40.1) | 265 (40.6) |
Post graduate | 64 (19.9) | 76 (23.6) | 140 (21.8) | 83 (25.2) | 80 (24.8) | 163 (25.0) |
Ethnicity/race | ||||||
White | 245 (76.3) | 242 (74.9) | 487 (75.6) | 260 (78.5) | 256 (79.3) | 516 (78.9) |
African American | 59 (18.4) | 61 (18.9) | 120 (18.6) | 54 (16.3) | 39 (12.1) | 93 (14.2) |
others | 17 (5.3) | 20 (6.2) | 37 (5.7) | 17 (5.1) | 28 (8.7) | 45 (6.9) |
Living alone | 140 (43.6) | 148 (45.8) | 288 (44.7) | 172 (52.0) | 153 (47.4) | 325 (49.7) |
CES-D score, mean (SD) | 8.0 ± 7.0 | 8.4 ± 8.0 | 8.2 ± 7.5 | 8.9 ± 8.0 | 8.7 ± 7.9 | 8.8 ± 7.9 |
Body mass index, kg/m2, mean (SD) | 31.0 ± 6.0 | 29.4 ± 5.4 | 30.2 ± 5.7 | 31.8 ± 6.4 | 28.8 ± 5.4 | 30.3 ± 6.1 |
SPPB score, mean (SD) | 7.4 ± 1.7 | 7.5 ± 1.5 | 7.4 ± 1.6 | 7.2 ± 1.6 | 7.4 ± 1.6 | 7.3 ± 1.6 |
SPPB = 8 or 9 | 174 (54.2) | 192 (59.4) | 366 (56.8) | 176 (53.2) | 181 (56.0) | 357 (54.6) |
History of hypertension | 243 (75.7) | 215 (66.6) | 458 (71.1) | 246 (74.3) | 222 (68.7) | 468 (71.6) |
History of diabetes | 86 (26.8) | 77 (23.8) | 163 (25.3) | 99 (29.9) | 70 (21.7) | 169 (25.8) |
History of cardiovascular disease | 27 (8.4) | 17 (5.3) | 44 (6.8) | 32 (9.7) | 19 (5.9) | 51 (7.8) |
History of stroke | 29 (9.0) | 21 (6.5) | 50 (7.8) | 17 (5.1) | 25 (7.7) | 42 (6.4) |