Table 3—

Multivariate RRs (95% CI) for change in the AHEI over 4, 6–8, and 10–12 years and risk for type 2 diabetes during subsequent period of follow-up (1990–2002 or 1994–2002)

AHEILow-lowHigh-lowLow-highHigh-high
4 years change*
    Case1,031161126621
    Multivariate RR10.85 (0.73–1.00), P = 0.040.78 (0.66–0.92), P = 0.0030.73 (0.67–0.80), P < 0.0001
6–8 years change
    Case1,011221173600
    Multivariate RR10.89 (0.78–1.02), P = 0.100.81 (0.70–0.93), P = 0.0040.71 (0.65–0.79), P < 0.0001
10–12 years change§
    Case756189130457
    Multivariate RR10.95 (0.82–1.10), P = 0.500.83 (0.70–0.98), P = 0.030.78 (0.70–0.87), P = 0.0001
  • Low-low, AHEI score in quintile 1 or 2 at the start and end of change period. High-low, AHEI score in quintile 4 or 5 at the start of change period and 1 or 2 at the end of change period; Low-high, reverse of High-low; High-high, AHEI score in quintile 4 or 5 at the start and end of change period. Results for women with a small amount of change (i.e., remainder of the cohort who were in the third quintile and did not change during the score-change period or did not move to the extreme or were in one extreme and moved to the third quintile at the end of the score change period) are not presented.

  • *

    * AHEI score change between 1986 and 1990, 1990 and 1994, and 1994 and 1998 was used to model diabetes incidence in 1990–1994, 1994–1998, and 1998–2002, respectively.

  • Adjusted for the same covariates as the multivariate model in Table 2.

  • AHEI score change between 1984 and 1990, 1986 and 1994, and 1990 and 1998 was used to model diabetes incidence in 1990–1994, 1994–1998, and 1998–2002, respectively.

  • §

    § Follow-up duration: 1994–2002. AHEI score change between 1984 and 1994 and 1986 and 1998 was used to model diabetes incidence in 1994–1998 and 1998–2002, respectively.