Table 3.

BMI- and age-stratified associations of incident diabetes with DDE body burdens measured in 1994–1995 in 471 participants.

Stratum	DDE tertile (ng/g wet weight)	No. per tertile	Incident cases (no.)	Person-years of follow-up	Incidence/1,000 person-years (no.)	Crude IRR per one-tertile increase (95% CI)	p-Value for trend	Adjusted IRR per one-tertile increasea (95% CI)	p-Value for trend
BMI (kg/m2)
17–25	< LOD to 2.2	64	0	580	0	3.5 (0.5–25.8)	0.26	3.0 (0.4–26.2)	0.33
	2.3–5.3	43	1	385	2.6
	5.4–49.2	28	1	243	4.1
25–29	< LOD to 2.2	48	2	364	5.5	1.6 (0.6–4.3)	0.31	1.7 (0.6–4.9)	0.30
	2.3–5.3	67	2	553	3.6
	5.4–49.2	43	4	331	12.1
29–48	< LOD to 2.2	41	0	381	0	2.2 (1.2–4.1)	0.01	2.2 (1.1–4.3)	0.02
	2.3–5.3	52	9	398	22.6
	5.4–49.2	85	17	712	23.8
Age (years)
25–44	< LOD to 2.2	83	1	752	1.3	1.8 (0.5–6.0)	0.33	1.5 (0.5–5.0)	0.48
	2.3–5.3	48	2	398	5.0
	5.4–49.2	26	1	240	4.2
44–52	< LOD to 2.2	46	1	370	2.7	2.0 (0.9–4.5)	0.08	1.5 (0.7–3.3)	0.26
	2.3–5.3	60	5	459	10.9
	5.4–49.2	51	6	396	15.2
52–76	< LOD to 2.2	24	0	204	0	2.9 (1.2–7.1)	0.02	2.6 (1.0–6.3)	0.04
	2.3–5.3	54	5	480	10.4
	5.4–49.2	79	15	650	23.1

^aIRR from proportional hazards model adjusted for age, sex, and BMI.