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

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

Variable DII score p for trenda p for trendb
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)
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
  1. 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
  2. aLinear regression across DII score tertiles
  3. bLinear regression across DII score tertiles with adjustment for age, sex, body mass index and physical activity