International Scholarly Research Notices

Research Article

Pesticide Concentrations in Vacuum Dust from Farm Homes: Variation between Planting and Nonplanting Seasons

Table 6

Mean atrazine concentrations of four vacuum samples from inside homes by various factors (variables(b)): concentrations in nanograms per gram dust (ng/g).

(a)


Variable	No. of Households	Planting season		Nonplanting season
Variable	No. of Households	GM (GSD)	value^a	GM (GSD)	value^a

Year house built
1840–1930	11	152 (6.8)		13 (5.7)
1931–1979	10	380 (4.6)	0.076	47 (7.5)	0.137
1980–2004	10	1140 (9.9)		62 (6.7)
Year moved into house
1928–1972	11	297 (8.6)		35 (7.5)
1973–1985	10	281 (6.3)	0.293	23 (6.2)	0.848
1986–2004	10	728 (9.0)		42 (9.0)
Distance to crop fields
≤75 ft	10	282 (7.5)		26
76–199 ft	10	640 (10.1)	0.654	63	0.422
≥200	11	333 (6.9)		21
Number acres corn planted
≤140 acres	10	159 (5.9)		11 (4.1)
141–335 acres	10	359 (8.1)	0.133	43 (6.0)	0.074
≥336 acres	11	950 (7.6)		69 (9.2)
Days applying corn pesticide
≤2 days	16	241 (6.7)	0.182	20 (5.3)	0.150
>2 days	15	651 (8.5)	0.182	55 (8.7)	0.150
Hours mixing corn pesticides
≤5 hours	14	220 (5.2)	0.163	17 (6.0)	0.110
>5 hours	17	623 (9.6)	0.163	54 (7.4)	0.110
Number acres soybeans planted
≤90 acres	10	181 (6.0)		12 (5.0)
91–300 acres	11	544 (7.3)	0.372	37 (6.2)	0.109
≥301 acres	10	580 (10.3)	0.372	76 (8.5)	0.109
Days applying soybean pesticides
≤2 days	17	257 (8.3)	0.221	20 (6.2)	0.128
>2 days	14	644 (6.8)	0.221	59 (7.6)	0.128
Hours mixing soybean pesticides
≤2 hours	15	168 (6.1)	0.024	17 (5.8)	0.078
>2 hours	16	850 (7.3)	0.024	59 (7.4)	0.078
Total acres sprayed
≤165	10	209 (6.5)		17 (5.2)
166–700	11	233 (7.7)	0.081	22 (6.7)	0.086
>700	10	1273 (6.6)	0.081	98 (7.4)	0.086
Applied lawn pesticides
Yes	8	686 (6.4)	0.373	45 (4.4)	0.587
No	23	320 (8.3)	0.373	28 (8.3)	0.587

^aP value obtained from ANOVA.

(b)


Variable	No. of Subjects	GM(GSD)	value	GM(GSD)	value

Mix and load pesticides
Self	10	918 (7.8)	0.110	105 (6.9)	0.019
Commercial	21	259 (7.1)	0.110	19 (5.8)	0.019
Apply pesticides
Self	10	966 (7.5)	0.089	108 (6.7)	0.016
Commercial	21	253 (7.1)	0.089	18 (5.8)	0.016
Cab on tractor or application vehicle
Yes	10	659 (10.5)	0.333	67 (6.5)	0.161
No	21	303 (6.7)	0.333	23 (7.1)	0.161
Wear protective gloves
Yes	17	330 (8.3)	0.607	38 (8.0)	0.630
No	14	482 (7.6)	0.607	27 (6.5)	0.630
Wear long pants
Yes	14	522 (7.2)	0.482	54 (8.4)	0.193
No	17	306 (8.5)	0.482	21 (5.8)	0.193
Wear long-sleeved shirt
Yes	11	552 (7.9)	0.492	46 (8.5)	0.467
No	20	322 (7.9)	0.492	27 (6.6)	0.467
Change work clothes
Outside home	15	556 (11.3)	0.358	48 (9.5)	0.304
Inside home	16	279 (5.1)	0.358	23 (5.1)	0.304
Bring work clothes inside home
Yes	20	528 (7.9)	0.273	37 (6.6)	0.627
No	11	224 (7.3)	0.273	26 (8.8)	0.627
Change work shoes
Outside home	18	631 (10.6)	0.126	39 (7.4)	0.512
Inside home	13	200 (3.8)	0.126	25 (7.0)	0.512
Bring work shoes inside home
Yes	18	510 (6.9)	0.398	42 (7.2)	0.421
No	13	268 (9.2)	0.398	23 (7.2)	0.421
Number times/month vacuum floors
≤2	5	400 (7.4)	0.976	34 (10.6)	0.942
>2	26	388 (8.1)	0.976	32 (6.7)	0.942
Number times/month mop floors
≤2	5	254 (9.6)	0.618	37 (11.8)	0.875
>2	26	423 (7.7)	0.618	32 (6.7)	0.875
Laundry work clothes separately
Yes	13	584 (7.8)	0.201	52 (9.2)	0.875
No	18	222 (7.2)	0.201	17 (3.9)	0.875
Have dog and allow inside house
Yes	9	732 (9.8)	0.281	86 (8.7)	0.076
No	22	322 (7.0)	0.281	22 (5.9)	0.076
Have cat and allow inside house
Yes	3	365 (27.1)	0.954	49 (7.5)	0.715
No	28	392 (7.1)	0.954	31 (7.3)	0.715