Obesity

 

Group A (BMI ≥ 25) (N = 440)

Group B (BMI < 25) (N = 161)

Age

64.90 ± 7.70

66.70 ± 8.78

Sex

224 F, 216 M

95 F, 66 M

BMI ± SD

(Range)

30.52 ± 4.66

(25.03–66.17)

22.52 ± 2.15

(14.35–24.97)

%BF ± SD

(Range)

38.51 ± 5.51

(18.88–57.41)

34.70 ± 5.61

(19.55–48.59)


BMI body mass index, %BF body fat percentage, SD standard deviation, F female, M male



Figure 1 and Table 2 show the regression analysis between BMI and BF%.

A369816_1_En_9_Fig1_HTML.gif


Fig. 1
Linear equations relating % BF to BMI in Groups A and B. BMI body mass index, % BF body fat percentage



Table 2
Linear equations relating body fat percentage and body mass index






















Standardized coefficients beta

r 2

Adjusted r 2

SEE

p value

0.338

0.114

0.113

5,14054

<0.001


SEE standard error of the estimate

The 69 % (N = 303) of Group A and the 48 % (N = 78) of Group B had a rotator cuff tear (Table 3). Patients with RCT had a BMI value higher than subjects with no RCT in both groups (p = 0.031 in Group A; p = 0.02 in Group B).


Table 3
BMI and % BF of the two groups































 
Group A (BMI ≥ 25) (N = 440)

Group B (BMI < 25) (N = 161)
 
RCT (N = 303)

Control (N = 137)

RCTs (N = 78)

Control (N = 83)

BMI ± SD

(Range)

31.18 ± 4.71

(25.16–48.55)

30.23 ± 4.62

(25.03–46.17)

22.23 ± 1.54

(18.02–24.97)

21.86 ± 2.42

(14.35–24.80)

BF% ± SD

(Range)

37.64 ± 5.71

(19.55–57.41)

36.70 ± 5.63

(18.88–48.67)

38.09 ± 5.87

(22.60–55.57)

37.68 ± 6.19

(24.65–56.73)


BMI body mass index, %BF body fat percentage, SD standard deviation, RCT rotator cuff tear, N number

Chi-square test demonstrated significant relationship between BMI value and the presence of the RTC (chi-square = 21.17, p < 0.001). In particular, significance was achieved for subjects of Group A (odds ratio = 2.35; 95 % confidence interval = 1.63–3.40; p < 0.001).

Moreover, significance was achieved for both men (odds ratio = 2.10; 95 % confidence interval = 1.27–3.52; p = 0.0036) and women (odds ratio = 1.94; 95 % confidence interval = 1.18–3.18; p = 0.0082) with a BMI between 25.00 and 30.00 kg/m2 as well as for both men (odds ratio = 2.49; 95 % confidence interval = 1.41–3.90; p = 0.0037) and women (odds ratio = 2.31; 95 % confidence interval = 1.38–3.62; p = 0.0071) with a BMI of ≥ 30.00 kg/m2 (Fig. 2 and Table 4).

A369816_1_En_9_Fig2_HTML.gif


Fig. 2
Relationship between rotator cuff tear and body mass index according to gender



Table 4
Risk estimates for RCTs according to body mass index for men and women























 
Men (N = 283)
 
Women (N = 318)

BMI (kg/m2)

OR

95 % CI

p value

OR

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Jul 14, 2017 | Posted by in ORTHOPEDIC | Comments Off on Obesity

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