TABLE 6.
Multivariate modeling of the association between glycemic index, glycemic load, and dietary inflammatory index and infertility risk.
| Variable | Crude model, OR (95% CI) | p | Model a , OR (95% CI) | p | Model b , OR (95% CI) | p |
|---|---|---|---|---|---|---|
| DII | ||||||
| First quarter | 1 | — | 1 | — | 1 | — |
| Second quarter | 0.68 (0.43–1.07) | .10 | 0.73 (0.44–1.22) | .23 | 0.60 (0.35–1.03) | .06 |
| Third quarter | 1.17 (0.74–1.84) | .49 | 1.19 (0.72–1.98) | .48 | 1.19 (0.69–2.04) | .52 |
| Fourth quarter | 1.62 (1.03–2.57) | .03 | 1.44 (0.86–2.41) | .15 | 1.7 (0.97–2.95) | .06 |
| GI | ||||||
| First quarter | 1 | — | 1 | — | 1 | — |
| Second quarter | 1.50 (0.95–2.39) | .08 | 1.37 (0.82–2.29) | .21 | 1.37 (0.80–2.36) | .24 |
| Third quarter | 1.97 (1.24–3.12) | .004 | 1.64 (0.98–2.75) | .05 | 1.75 (1.02–3.0) | .04 |
| Fourth quarter | 2.66 (1.67–4.24) | <.001 | 2.08 (1.23–3.52) | .006 | 2 (1.16–3.45) | .01 |
| GL | ||||||
| First quarter | 1 | — | 1 | — | 1 | — |
| Second quarter | 1.16 (0.63–2.14) | .61 | 1.50 (0.75–3.0) | .24 | 1.55 (0.76–3.15) | .22 |
| Third quarter | 2.56 (1.50–4.35) | .001 | 3.68 (1.97–6.85) | <.001 | 3.45 (1.83–6.52) | <.001 |
| Fourth quarter | 2.75 (1.64–4.60) | <.001 | 3.56 (1.94–6.51) | <.001 | 3.68 (1.99–6.82) | <.001 |
a
Adjusted with demographic variables including age, education level, occupation, family income, and physical activity level.
b
In addition to demographic variables, anthropometric indices including BMI, waist circumference, waist‐to‐height ratio, and waist‐to‐hip ratio have also been adjusted. p‐Values were acquired using logistic regression test. p‐Value <.05 is considered statistically significant (in bold).