. 2016 Aug 12;125(3):333–341. doi: 10.1289/EHP425

Table 3.

Comparisons between proximal versus non-proximal and farmworker versus non-farmworker for outdoor air concentrations (ng/m³), indoor air concentrations (ng/m³), and surface deposition (ng/cm²).

Sample type	Proximal		Non-proximal		p-Value^a	Farmworker		Non-farmworker		p-Value^a
Sample type	n	Mean ± Std	n	Mean ± Std	p-Value^a	n	Mean ± Std	n	Mean ± Std	p-Value^a
Outdoor air (ng/m³)
Spring
CPF	18	53.4 ± 53.9	18	18.2 ± 10.1	0.02	21	48.2 ± 50.9	15	17.7 ± 10.4	0.01
CPF-O	18	7.5 ± 4.3	18	3.1 ± 2.3	0.01	21	5.8 ± 4.3	15	4.6 ± 3.6	0.01
Summer
AZM	13	2.1 ± 2.2	17	0.3 ± 0.2	< 0.001	17	1.4 ± 2.1	13	0.65 ± 0.5	0.18
AZM-O	13	0.2 ± 0.3	17	0.02 ± 0.02^b	0.69	17	0.1 ± 0.2	13	0.03 ± 0.03^b	0.48
Indoor air (ng/m³)
Spring
CPF	12	6.3 ± 5.9	17	1.4 ± 3.0	0.03	16	5.4 ± 5.5	11	0.2 ± 0.3	0.01
CPF-O	12	0.1 ± 0.2^b	17	0.02 ± 0.1^b	0.96	16	0.1 ± 0.2^b	11	0.01 ± 0.0^b	0.20
Summer
AZM	11	0.04 ± 0.1^b	15	0.1 ± 0.2^b	0.82	15	0.1 ± 0.2^b	11	0.03 ± 0.1^b	0.12
AZM-O	11	0.03 ± 0.1^b	15	0.01 ± 0.01^b	NA	15	0.03 ± 0.1^b	11	< LOD	NA
Indoor surface (ng/cm²)
Spring
CPF	12	1.2 ± 2.2^b	15	0.2 ± 0.5^b	0.01	16	1.0 ± 1.9^b	11	0.1 ± 0.1^b	0.37
CPF-O	12	0.06 ± 0.1^b	15	0.01 ± 0.05^b	NA	16	0.06 ± 0.1^b	11	< LOD	NA
Summer
AZM	11	0.3 ± 0.5^b	15	0.2 ± 0.2^b	0.03	16	0.4 ± 0.4^b	10	0.04 ± 0.05^b	0.09
AZM-O	11	0.01 ± 0.01^b	15	< LOD	NA	16	< LOD	10	< LOD	NA
Note: Winter samples were not used in the comparisons due to limited sample size. LOD, limit of detection; NA, not available; n, number of samples. ^ap < 0.05 for differences between groups (Kruskal–Wallis test). ^bFor these samples, the calculated mean and standard deviations include substituted values < LOD.