Table 2

HRs (95% CI) of T2D according to total potato consumption

Total potato consumption, servings/weekEvery 3 servings/weekP value for trend
<112–45–6≥7
NHS
 Cases/person-years222/76,255678/188,6523,625/765,3232,742/520,932169/33,410
  Model 1*1.001.14 (0.98–1.32)1.33 (1.16–1.53)1.56 (1.36–1.79)1.73 (1.42–2.11)1.23 (1.18–1.28)<0.0001
  Model 21.001.18 (1.01–1.37)1.34 (1.17–1.54)1.49 (1.29–1.72)1.56 (1.27–1.92)1.16 (1.11–1.21)<0.0001
  Model 31.001.16 (0.99–1.35)1.25 (1.09–1.44)1.31 (1.14–1.51)1.34 (1.09–1.64)1.08 (1.04–1.13)0.0003
  Model 4§1.001.08 (0.93–1.26)1.15 (1.00–1.32)1.22 (1.05–1.40)1.27 (1.04–1.56)1.08 (1.04–1.13)0.0003
NHSII
 Cases/person-years124/78,479400/215,1702,156/788,6091,782/498,008159/30,045
  Model 1*1.001.05 (0.86–1.29)1.34 (1.12–1.60)1.96 (1.64–2.36)3.35 (2.64–4.23)1.57 (1.49–1.65)<0.0001
  Model 21.001.04 (0.85–1.28)1.27 (1.05–1.52)1.70 (1.41–2.05)2.49 (1.95–3.17)1.41 (1.34–1.49)<0.0001
  Model 31.001.02 (0.83–1.24)1.15 (0.96–1.39)1.44 (1.19–1.74)2.04 (1.60–2.61)1.30 (1.23–1.37)<0.0001
  Model 4§1.000.95 (0.78–1.16)0.99 (0.82–1.19)1.09 (0.90–1.31)1.38 (1.08–1.76)1.12 (1.05–1.18)0.0002
HPFS
 Cases/person-years120/34,791311/89,7911,466/350,2161,266/291,602142/26,723
  Model 1*1.000.95 (0.77–1.18)1.04 (0.86–1.25)1.13 (0.93–1.36)1.44 (1.13–1.84)1.12 (1.06–1.19)<0.0001
  Model 21.001.00 (0.81–1.24)1.10 (0.91–1.33)1.18 (0.97–1.44)1.47 (1.14–1.89)1.12 (1.05–1.19)0.0003
  Model 31.000.99 (0.80–1.23)1.06 (0.88–1.29)1.10 (0.90–1.34)1.33 (1.03–1.72)1.07 (1.01–1.14)0.03
  Model 4§1.000.94 (0.76–1.17)1.03 (0.85–1.24)1.09 (0.89–1.32)1.38 (1.07–1.78)1.10 (1.03–1.17)0.004
Pooled
 Model 31.001.08 (0.97–1.20)1.17 (1.07–1.29)1.29 (1.17–1.42)1.52 (1.33–1.73)1.17 (1.13–1.22)<0.0001
 Model 4§1.001.01 (0.91–1.12)1.07 (0.97–1.18)1.15 (1.04–1.26)1.33 (1.17–1.52)1.13 (1.09–1.17)<0.0001
  • *Model 1 was adjusted for age (years).

  • †Model 2 was adjusted for age; ethnicity (Caucasian, African American, Hispanic, or Asian); smoking status (never, past, current [1–14, 15–24, or ≥25 cigarettes/day], or missing); alcohol intake [0, 0.1–4.9, 5.0–14.9, or ≥15.0 g/day for women and 0, 0.1–4.9, 5.0–29.9, or ≥30.0 g/day for men); multivitamin use (yes or no); physical activity (<3, 3.0–8.9, 9.0–17.9, 18.0–26.9, ≥27.0 metabolic equivalents of task-hours/week, or missing); a family history of diabetes (yes or no); menopausal status and postmenopausal hormone use (premenopause, postmenopause [never, past, or current hormone use], or missing, for women); oral contraceptive use (never, past, current, or missing, for NHS II); and total energy intake (kcal/day).

  • ‡Model 3 was adjusted for variables in model 2 plus modified aHEI score (fifths).

  • §Model 4 was adjusted for variables in model 3 plus baseline BMI (<23, 23.0–24.9, 25.0–26.9, 27.0–28.9, 29.0–30.9, 31.0–32.9, 33.0–34.9, 35.0–36.9, 37.0–38.9, 39.0–40.9, 41.0–42.9, 43.0–44.9, and ≥45.0 kg/m2, or missing).

  • ¶Results from all cohorts were pooled using a fixed-effects meta-analysis.