A biomonitoring study on blood levels of beta-hexachlorocyclohexane among people living close to an industrial area

Table 1 Population invited to the survey, respondents to questionnaire, eligible to and giving a blood sample, by sub-area of residence, gender and age

	Males				Females				Total
	25-44		45-64		25-44		45-64		Total
	N	%	N	%	N	%	N	%	N	%
Area 1
Subjects invited to the survey	13	100	13	100	20	100	20	100	66	100
Subjects responding of the questionnaire*	11	84.6	9	69.2	7	35.0	16	80.0	43	65.2
Subjects eligible to give blood sample	10	100	10	100	5	100	14	100	39	100
Subjects providing a valid blood sample**	8	80.0	9	90.0	5	100	8	57.1	30	76.9
Area 2
Subjects invited to the survey	25	100	25	100	40	100	40	100	130	100
Subjects responding of the questionnaire*	22	88.0	25	100	31	77.5	39	97.5	117	90.0
Subjects eligible to give blood sample	15	100	27	100	16	100	34	100	92	100
Subjects providing a valid blood sample**	12	80.0	13	48.1	12	75.0	15	44.1	52	56.5
Area 3
Subjects invited to the survey	25	100	25	100	40	100	40	100	130	100
Subjects responding of the questionnaire*	13	52.0	18	72.0	28	70.0	32	80.0	91	70.0
Subjects eligible to give blood sample	11	100	18	100	12	100	28	100	69	100
Subjects providing a valid blood sample**	11	100	13	72.2	9	75.0	14	50.0	47	68.1
Area 4
Subjects invited to the survey	60	100	60	100	90	100	90	100	300	100
Subjects responding of the questionnaire*	56	93.3	60	100	78	87	64	71.1	258	86
Subjects eligible to give blood sample	50	100	58	100	37	100	59	100	204	100
Subjects providing a valid blood sample**	27	54	34	58.6	29	78	27	45.8	117	57.4
Total
Subjects invited to the survey	123	100	123	100	190	100	190	100	626	100
Subjects responding of the questionnaire*	102	82.9	112	91.1	144	76	151	79.5	509	81.3
Subjects eligible to give blood sample	86	100	113	100	70	100	135	100	404	100
Subjects providing a valid blood sample**	58	67.4	69	61.1	55	79	64	47.4	246	60.9

ISSN: 1476-069X