Table 1.

Demographic Characteristics of Participants at the Time of TCDD Measurement, Seveso Women's Health Study, Italy, 1976–2009

Characteristic	1976 (n = 909)		1996 (n = 260)
	No.	%	No.	%
At Time of Explosion (1976)
Age, years
0–10	223	24.5	131	50.4
11–20	268	29.5	117	45.0
21–30	220	24.2	10	3.9
31–40	198	21.8	2	0.8
Menarcheal status
Premenarche	272	29.9	161	61.9
Postmenarche	637	70.1	99	38.1
At Time of 1996 Interview
Age, years
20–30	207	22.8	121	46.5
31–40	272	29.9	125	48.1
41–50	223	24.5	12	4.6
51–62	207	22.8	2	0.8
Parity
0	253	27.8	108	41.5
1	184	20.2	82	31.5
≥2	472	51.9	70	26.9
Educational level
Less than high school	494	54.4	67	25.8
High school	372	40.9	172	66.2
More than high school	43	4.7	21	8.0
Body mass indexa category
<18.5	52	5.7	25	9.6
18.5–24.9	582	64.0	192	73.9
25.0–29.9	202	22.2	31	11.9
≥30.0	73	8.0	12	4.6
Alcohol consumption
Never drinker	580	63.8	186	71.5
Current drinker
<1 drink/day	194	21.3	56	21.5
≥1 drink/day	135	14.9	18	7.0
Cigarette smoking
Never smoker	592	65.1	157	60.4
Former smoker	128	14.1	44	16.9
Current smoker
≤10 cigarettes/day	119	13.1	44	16.9
>10 cigarettes/day	70	7.7	15	5.8
Marital status
Never married	173	19.0	78	30.0
Ever married	736	81.0	182	70.0

Abbreviation: TCDD, 2,3,7,8-tetrachlorodibenzo-p-dioxin.

^a Weight (kg)/height (m)².