Table 3 Subgroup analysis between CALLYI quartiles and osteoarthritis

Gender

0.4

 Male

ref

0.76

(0.59,0.96)

0.70

(0.54,0.91)

0.49

(0.37,0.65)

 Female

ref

0.96

(0.80,1.14)

0.87

(0.73,1.05)

0.74

(0.59,0.92)

Race

0.95

 White

ref

0.82

(0.70,0.96)

0.72

(0.61,0.84)

0.57

(0.47,0.70)

 Black

ref

0.65

(0.45,0.94)

0.82

(0.55,1.23)

0.63

(0.41,0.98)

 Mexican American

ref

0.85

(0.58,1.27)

0.64

(0.38,1.08)

0.54

(0.31,0.93)

 Other Hispanic

ref

0.75

(0.31,1.77)

0.49

(0.22,1.12)

0.24

(0.07,0.79)

 Multi racial

ref

0.66

(0.31,1.43)

0.50

(0.21,1.19)

0.40

(0.17,0.94)

Age

0.91

 20-55years old

ref

0.77

(0.56,1.05)

0.72

(0.54,0.96)

0.65

(0.47,0.90)

 > 55years old

ref

0.82

(0.69,0.97)

0.74

(0.61,0.89)

0.64

(0.51,0.79)

Educational level

0.65

 College Graduate or above

ref

0.90

(0.74,1.10)

0.75

(0.61,0.92)

0.64

(0.51,0.80)

 9-12th Grade

ref

0.74

(0.59,0.92)

0.70

(0.55,0.88)

0.51

(0.36,0.72)

 < 9th Grade

ref

0.69

(0.43,1.09)

0.57

(0.32,1.02)

0.35

(0.17,0.71)

BMI

0.31

 25–30

ref

0.87

(0.69,1.10)

0.71

(0.54,0.94)

0.61

(0.46,0.82)

 > 30

ref

0.78

(0.64,0.96)

0.82

(0.66,1.04)

0.77

(0.53,1.11)

 18–25

ref

0.82

(0.51,1.31)

0.62

(0.42,0.92)

0.49

(0.35,0.69)

 < 18

ref

0.26

(0.00, 16.15)

0.10

(0.01, 0.64)

0.34

(0.08, 1.36)

Poverty Impact Ratio

0.24

 < 1.3

ref

1.43

(1.03,1.97)

1.77

(1.24,2.53)

2.21

(1.44,3.40)

 1.3–3.5

ref

1.36

(1.07,1.74)

1.39

(1.06,1.84)

1.87

(1.40,2.49)

 > 3.5

ref

1.03

(0.84,1.27)

1.28

(1.02,1.62)

1.54

(1.21,1.96)