Table 2.

Relative risks of incident diabetes for individuals ages 40–55 years free of diabetes in the 1980s, 1990s, and 2000s compared with the 1970s

	Age-adjusted RR (95% CI)	P value	RR with age and BMI adjustment (95% CI)	P value
Overall
1970s	Ref		1
1980s	1.37 (0.87–2.16)	0.17	1.34 (0.85–2.11)	0.20
1990s	1.99 (1.30–3.03)	<0.01	1.58 (1.03–2.42)	0.04
2000s	1.81 (1.16–2.82)	0.01	1.32 (0.84–2.08)	0.22
Women
1970s	Ref		Ref
1980s	1.45 (0.74–2.86)	0.28	1.42 (0.72–2.80)	0.31
1990s	1.80 (0.94–3.44)	0.08	1.40 (0.72–2.70)	0.32
2000s	1.37 (0.67–2.78)	0.38	0.96 (0.47–1.97)	0.92
Men
1970s	Ref		Ref
1980s	1.32 (0.72–2.42)	0.36	1.29 (0.71–2.37)	0.40
1990s	2.16 (1.24–3.76)	<0.01	1.68 (0.95–2.95)	0.07
2000s	2.20 (1.24–3.92)	<0.01	1.52 (0.84–2.75)	0.16

Ref, referent; RR, relative risk.