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. Author manuscript; available in PMC: 2014 Jun 1.
Published in final edited form as: Osteoarthritis Cartilage. 2013 Mar 14;21(6):839–848. doi: 10.1016/j.joca.2013.03.003

Table 2.

Descriptive statistics for age, weight, and osteophyte occurrence by sex and OA severity.

age (yrs.) weight (kg)

OA severity N (% of sex)
(CI lower, upper)
% grade with osteophytes
(CI lower, upper)
mean sd min-max mean sd min-max
♀ Grade 1 59 (19%)
(9%, 29%)
24%
(13%, 35%)
17.28 6.68 4.9—32.45 16.32 3.35 10.04—26.4
♀ Grade 2 76 (25%)
(15%, 34%)
12%
(5%, 19%)
17.13 5.76 6.0—33.27 17.16 3.38 10.14—29.6
♀ Grade 3 97 (31%)
(22%, 41%)
55%
(45%, 65%)
20.29 5.44 6.13—30.46 18.20 4.76 10.40—32.05
♀ Grade 4 77 (25%)
(15%, 35%)
97%
(90%, 99%)
22.71 4.71 6.08—30.14 19.09 4.64 11.40—34.48

♂ Grade 1 17 (11%)
(3%, 36%)
24%
(3%, 44%)
15.77 6.07 4.47—25.52 28.19 7.37 14.58—45.21
♂ Grade 2 65 (42%)
(30%, 54%)
26%
(15%, 37%)
13.32 5.04 5.7—23.81 27.31 4.95 17.12—38.90
♂ Grade 3 53 (34%)
(21%, 47%)
49%
(36%, 62%)
18.41 5.09 7.62—28.14 27.36 4.91 19.41—43.60
♂ Grade 4 20 (13%)
(4%, 35%)
95%
(72%, 99%)
18.55 4.30 9.74—24.23 28.82 3.60 24.54—36.76