Table 2.
Association between dietary inflammatory index and prevalence of osteoarthritis.
| Cases/total | Prevalence (%) |
Unadjusted OR (95%CI) |
P value | Fully-adjusteda OR (95%CI) |
P value | |
|---|---|---|---|---|---|---|
| DII <−4.43 | 262/1090 | 24.0 | 1 [reference] | 1 [reference] | ||
| P for trend<0.0001 | P for trend=0.02 | |||||
| DII −4.43 & −3.64 | 304/1089 | 27.9 | 1.22 (1.00–1.48) | 0.045 | 1.14 (0.93–1.39) | 0.21 |
| DII −3.63 &−2.42 | 319/1090 | 29.3 | 1.30 (1.07–1.58) | 0.007 | 1.16 (0.94–1.42) | 0.16 |
| DII ≥−2.42 | 385/1089 | 35.4 | 1.74 (1.44–2.10) | <0.0001 | 1.40 (1.14–1.72) | 0.002 |
Notes:
All the data are presented as odds ratios (ORs) with their 95% confidence intervals.
a
Fully-adjusted model included as covariates: age (as continuous); sex; race (whites vs. others); body mass index (as continuous); education (degree vs. others); smoking habits (current and previous vs. others); yearly income (categorized as ≥ or < 50,000$ and missing data); Physical Activity Scale for Elderly score (as continuous); Charlson co-morbidity index; use of medications for knee OA (yes vs. no); CES-D (as continuous).
Abbreviations: CI: confidence intervals; OR: odds ratio.