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. Author manuscript; available in PMC: 2014 Apr 1.
Published in final edited form as: J Am Geriatr Soc. 2013 Mar 25;61(4):551–557. doi: 10.1111/jgs.12170

Table 1.

Median (Md) Step Count in First and Last 24-hours of Hospitalization, and Change in Step Count from First to Last 24-Hours by Sociodemographic and Clinical Characteristic (N = 224).

Total Steps
First 24 hrs Last 24 hrs Δ in Steps First to Last 24-hrs
Characteristic N (%) Md (Q1, Q3) Md (Q1, Q3) Md (Q1, Q3) p-value

Total 224 478 (72, 1486) 846 (230, 2189) 174 (−59, 820)**

Age (y) 0.1457
 65–74 108 (48.2) 497 (59, 1763) 913 (198, 2464) 187 (−49, 995)**
 75–84 86 (38.4) 458 (76, 1196) 882 (268, 1918) 216 (−64, 814)**
 ≥ 85 30 (13.4) 660 (78, 1442) 688 (118, 1676) 38 (−264, 350)
Gender 0.5724
 Women 148 (66.1) 516 (66, 1331) 809 (209, 2189) 181 (−12, 848)**
 Men 76 (33.9) 433 (77, 1814) 919 (241, 2224) 90 (−125, 796)*
Race/Ethnicity 0.1775
 Non-Hispanic white 146 (65.2) 456 ( 64, 1562) 809 (242, 2184) 198 (−48, 882)**
 Non-Hispanic black 51 (22.8) 620 (140, 1306) 1200 (302, 2414) 182 (−288, 1030)*
Hispanic 27 (12.0) 468 ( 24, 2350) 630 (108, 1402) 32 (−148, 590)
Marital Status 0.0300
 Married 94 (42.1) 516 (90, 1562) 1100 (368, 2360) 352 (0, 970)**
 Unmarried 129 (57.9) 462 (62, 1400) 692 (186, 2024) 112 (−102, 590)*
Education 0.0743
 ≥ High School 134 (59.8) 597 (94, 1562) 1054 (298, 2476) 256 (−24, 1192)**
 < High School 90 (40.2) 450 (64, 1400) 596 (140, 1402) 132 (−58, 590)*
Comorbid conditions 0.1496
0 – 1 63 (28.2) 466 (50, 1134) 720 (238, 2360) 320 (4, 1204)**
2 – 3 92 (41.3) 497 (99, 1727) 913 (225, 2413) 142 (−82, 757)*
≥ 4 68 (30.5) 368 (82, 1338) 788 (212, 1965) 108 (−160, 522)
BMI (kg/m2) 0.8602
≤ 21 38 (17.0) 472 (270, 1400) 863 (244, 1676) 196 (−112, 784)*
21.1 – 29.9 72 (32.3) 319 (45, 1272) 555 (158, 1695) 131 (−39, 627)**
≥ 30 113 (50.7) 538 (76, 2074) 1200 (238, 2574) 160 (−48, 1048)**
Length of stay (days) 0.2244
2–3 105 (47.7) 718 (174, 2542) 1542 (560, 2986) 242 (−122,
≥ 4 115 (52.3) 306 (28, 1134) 516 (162, 1504) 1212)**
132 (−48, 668)**
Discharge diagnosis 0.7305
Cardiovascular 67 (29.9) 688 (90, 1562) 864 (250, 1978) 114 (−138, 606)
Respiratory 36 (16.1) 755 (341, 1866) 1095 (318, 2406) 172 (−485, 1120)
Urinary tract /Kidney infection 22 (9.8) 555 (140, 2724) 844 (140, 4292) 158 (−4, 646)
Gastrointestinal 64 (28.6) 213 (10, 1191) 585 (186, 2100) 187 (0, 814)**
Other 35 (15.6) 328 (64 – 1582) 788 (244 – 3436) 354 (16, 1666)**

Wilcoxon signed rank test assessed statistically significant change in total steps from first and last 24 hours of hospitalization for each level of sociodemographic and clinical characteristic.

**

Statistically different from 0: p< 0.001,

*

p<0.05

Median regression analysis assessed median step change from first to last 24-hours of hospitalization across different levels of sociodemographic and clinical characteristic.