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Table 1 Baseline Characteristics of all subjects >60 years old (n = 2,182)

From: The impact of waist circumference on function and physical activity in older adults: longitudinal observational data from the osteoarthritis initiative

   

Waist circumference

Quartile

  
 

Overall cohort

Low

25-50%

50-75%

75%+

p-value

 

N = 2,182

n = 553

n = 538

n = 548

n = 543

 

Age, years

68.2 ± 5.4

67.9 ± 5.4

68.7 ± 5.4

68.5 ± 5.4

67.5 ± 5.3

<0.001

Female Sex, %

1367 (62.7)

390 (70.5)

326 (60.6)

327 (59.7)

324 (59.7)

<0.001

Education Status

      

  < High School

432 (19.8)

93 ( 16.8)

111 (20.6)

119 (21.7)

109 (20.1)

 

  Some College

524 (24.0)

125 (22.6)

134 (24.9)

128 (23.4)

137 (25.2)

0.23

  College

417 (19.1)

103 (18.6)

101 (18.7)

99 (18.1)

114 (21.0

 

  >College

809 (37.1)

232 (42.0)

192 (35.7)

202 (36.9)

183 (33.7)

 

Yearly Income

      

  >$50,000

1115 (53.7)

301 (57.0)

280 (55.2)

285 (54.7)

249 (47.8)

0.02

Marital Status

      

  Married

1443 (66.2)

370 (67.0)

368 (68.4)

376 (68.6)

329 (60.6)

0.02

Race

      

  White

1792 (82.2 )

473 (85.7)

434 (80.7)

451 (82.3)

434 (79.9)

 

  Black

336 (15.4)

62 (11.2)

90 (16.7)

85 (15.5)

99 (18.2)

0.003

  Asian

53 (2.4)

9 (1.6)

8 (1.5)

2 (0.4)

--

 

Charlson Score

0.45 ± 0.9

0.31 ± 0.73

0.45 ± 0.89

0.48 ± 0.96

0.58 ± 0.99

<0.001

Modified Charlson Score

0.09 ± 0.30

0.05 ± 0.21

0.09 ± 0.31

0.12 ± 0.23

0.12 ± 0.34

<0.001

WOMAC pain Right

16.0 ± 15.5

8.4 ± 11.9

10.8 ± 13.4

12.3 ± 14.3

14.2 ± 15.3

<0.001

WOMAC pain Left

16.4 ± 16.8

7.8 ± 12.6

10.8 ± 14.6

12.0 ± 15.3

13.8 ± 16.1

<0.001

Ever Smoker

1084 (50.1)

258 (46.8)

256 (48.1)

289 (53.1)

281 (52.2)

0.10

# Medications

3.83 ± 2.44

3.41 ± 2.27

3.61 ± 2.30

3.99 ± 2.49

4.27 ± 2.59

<0.001

Knee Osteoarthritis Present

1315 (60.3)

269 (48.6)

324 (60.2)

341 (62.2)

381 (70.2)

<0.001

Waist circumference, cm

103.2 ± 12.1

88.4 ± 5.9

98.9 ± 2.2

106.7 ± 2.3

118.7 ± 6.8

<0.001

Body Mass Index, kg/m 2

28.3 ± 4.5

24.1 ± 2.9

26.9 ± 3.0

29.2 ± 2.9

33.2 ± 3.4

<0.001

Cohort Allocation

      

  Incident

1,595 (73.1)

453 (81.9)

401 (74.5)

397 (72.5)

344 (63.4)

 

  Progression

577 (26.4)

96 (17.4)

133 (24.7)

150 (27.4)

198 (36.5)

<0.001

  Control

10 (0.5)

4 (0.7)

4 (0.7)

1 (0.2)

1 (0.2)

 
  1. All values represent mean ± SD, or count (%).
  2. P-value represents the ANOVA across all waist circumference quartiles categories.
  3. Abbreviations: OA defined as having radiographic knee osteoarthritis on either knee or both knees, WOMAC Western Ontario and McMaster University Arthritis Index.
  4. Some fields may not add up to overall cohort totals due to missing values.
  5. Modified Charlson score consisted of the following variables: chronic obstructive pulmonary disease, ulcers, renal disorders, kidney transplant, rheumatoid arthritis, and cancer.
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Nutrition Journal

ISSN: 1475-2891

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