Table 1.
Baseline characteristics of study participants*
| Characteristics | Overall participants (n = 3,985) | Women without falls (n = 2471) | Women with one fall (n = 853) | Women with ≥2 falls (n = 630) | P-value |
|---|---|---|---|---|---|
| Age: mean (SDa), years |
69.4 (8.89) |
69.4 (8.58) |
69.6 (9.14) |
69.4 (9.74) |
0.748c |
| Age strata, n (%) | |||||
| 55-64 |
1,385 (34.76) |
839 (33.95) |
292 (34.23) |
248 (39.37) |
0.404d |
| 65-74 |
1,423 (35.71) |
939 (38.00) |
285 (33.41) |
187 (29.68) |
|
| 75-84 |
952 (23.89) |
578 (23.39) |
219 (25.67) |
142 (22.54) |
|
| ≥85 |
225 (5.65) |
115 (4.65) |
57 (6.68) |
53 (8.41) |
|
| BMIb: mean (SD), kg/m2 |
27.7 (5.77) |
27.5 (5.54) |
27.7 (5.90) |
28.5 (6.40) |
0.002c |
| Smoker, n (%) | |||||
| Yes |
447 (11.3) |
269 (10.96) |
97 (11.44) |
77 (12.32) |
0.623e |
| No |
3,510 (88.70) |
2185 (89.04) |
751 (88.56) |
548 (87.68) |
|
| Drinking (drinks/week), n (%) | |||||
| 0 |
2,027 (51.21) |
1239 (50.49) |
411 (48.52) |
360 (57.51) |
0.057d |
| <7 |
1,414 (35.73) |
886 (36.10) |
324 (38.25) |
193 (30.83) |
|
| 7-13 |
428 (10.81) |
276 (11.25) |
94 (11.10) |
56 (8.95) |
|
| ≥14 |
89 (2.25) |
53 (2.16) |
18 (2.13) |
17 (2.72) |
|
| Race, n (%) | |||||
| White |
3,717 (93.27) |
2299 (93.04) |
798 (93.55) |
597 (94.76) |
0.293e |
| Non-white |
268 (6.73) |
172 (6.96) |
55 (6.45) |
33 (5.24) |
|
| Education, n (%) | |||||
| High school or less |
2,509 (64.10) |
1608 (66.23) |
518 (61.74) |
360 (58.16) |
<0.001e |
| More than high school |
1,405 (35.90) |
820 (33.77) |
321 (38.26) |
259 (41.84) |
|
| Family history of fractures, n (%) | |||||
| Yes |
898 (23.81) |
514 (21.82) |
204 (25.40) |
172 (29.30) |
<0.001e |
| No |
2,874 (76.19) |
1842 (78.18) |
599 (74.60) |
415 (70.70) |
|
| Overnight hospitalization in last 12 months, n (%) | |||||
| 0 |
3,498 (88.65) |
2213 (90.25) |
747 (88.30) |
516 (82.96) |
<0.001d |
| 1 |
337 (8.54) |
187 (7.63) |
78 (9.22) |
69 (11.09) |
|
| ≥2 |
111 (2.81) |
52 (2.12) |
21 (2.48) |
37 (5.95) |
|
| Prior fractures since 45 years old, n (%) | |||||
| Yes |
862 (22.31) |
447 (18.65) |
217 (26.08) |
193 (31.64) |
<0.001e |
| No |
3,001 (77.69) |
1950 (81.35) |
615 (73.92) |
417 (68.36) |
|
| Frailty index: mean (SD) | 0.24 (0.13) | 0.22 (0.12) | 0.25 (0.13) | 0.31 (0.15) | <0.001c |
*Mean follow-up = 3.01 years.
aSD: standard deviation; bBMI: body mass index; cOne-way analysis of variance (ANOVA) test; dMantel-Haenszel Chi-square test; eChi-square test.