Table 2 Stepwise approach to examine energy-adjusted zinc as an independent predictor of a new diagnosis of diabetes
Quintile of energy-adjusted zinc | ||||||
|---|---|---|---|---|---|---|
Q1 | Q2 | Q3 | Q4 | Q5 | P | |
Number of women | 1785 | 1784 | 1784 | 1784 | 1784 | |
Energy-adjusted zinc [median (min, max)] | −1.25 (-4.8, -0.79) | −0.48 (-0.79, -0.23) | 0.01 (-0.23, 0.26) | 0.50 (0.26, 0.79) | 1.24 (0.79, 4.45) | |
Number of diabetics | 80 | 60 | 59 | 74 | 60 | |
Odds ratio | ||||||
• Age adjusted | 1.00 | 0.74 (0.53 to 1.05) | 0.73 (0.52 to 1.03) | 0.99 (0.67 to 1.28) | 0.75 (0.53 to 1.05) | 0.319 |
• Age & non-dietary† factors adjusted | 1.00 1.00 | 0.82 (0.56 to 1.19) | 0.65 (0.44 to 0.96) | 0.83 (0.58 to 1.19) | 0.56 (0.38 to 0.83) | 0.010 |
• Age, non-dietary† and dietary‡ factors adjusted | 1.00 | 0.78 (0.53 to 1.15) | 0.60 (0.40 to 0.91) | 0.77 (0.52 to 1.13) | 0.48 (0.31 to 0.75) | 0.004 |
• Age, non-dietary† and dietary‡ factors adjusted plus alcohol intake and use of supplements | 0.80 (0.54 to 1.17) | 0.60 (0.40 to 0.90) | 0.78 (0.53 to 1.15) | 0.50 (0.32 to 0.77) | 0.006 | |