Dietary inflammatory index is associated with pain intensity and some components of quality of life in patients with knee osteoarthritis

Table 2 The differences on functional status, pain intensity and quality of life among DII score tertiles of patients with knee osteoarthritis

Variable	DII score			p for trend^a	p for trend^b
Variable	DII Score Tertile 1 (< − 1.3) (n = 73)	DII Score Tertile 2 (− 1.3 to 4.5) (n = 73)	DII Score Tertile 3 (> 4.5) (n = 74)	p for trend^a	p for trend^b
VAS	0.20 ± 4	0.01 ± 6	0.03 ± 6	0.001	0.012
WOMAC	2.21 ± 40	2.32 ± 44	2.12 ± 45	0.181	0.091
QOL
PF	3.80 ± 55.54	3.95 ± 47.40	3.71 ± 41.23	0.031	0.014
RP	57.43 ± 2.88	3.31 ± 50.51	41.61 ± 3.73	0.004	0.010
RE	3.73 ± 35.14	3.88 ± 38.36	3.78 ± 30.59	0.351	0.215
E/F	2.27 ± 50.34	2.33 ± 49.38	2.1 ± 44.18	0.111	0.085
EW	1.92 ± 44.99	2.07 ± 48.83	1.70 ± 44.43	0.207	0.102
SF	2.53 ± 55.91	2.65 ± 53.42	2.4 ± 47.60	0.061	0.049
P	2.67 ± 64.73	2.69 ± 58.60	2.6 ± 54.52	0.025	0.043
GH	2.5 ± 50.55	2.91 ± 47.47	2.97 ± 48.59	0.737	0.126
PH	228.29 ± 7.58	204.04 ± 5.02	186.98 ± 4.18	0.011	0.045
MH	186.47 ± 3.79	190.03 ± 8.61	166.82 ± 3.51	0.517	0.147

DII dietary inflammatory index, EF energy/fatigue, EW emotional well-being, GH general health, MH mental health, P pain, PF physical function, PH physical health, QOL quality of life, RE role limitation due to emotional problems, RP role limitation due to physical health, SF social function, VAS, visual analogue scale, WOMAC,Western Ontario and McMaster Index
^aLinear regression across DII score tertiles
^bLinear regression across DII score tertiles with adjustment for age, sex, body mass index and physical activity

ISSN: 1756-0500