Table 5.

Correlation^a between levels of insecticides and a pesticide adjuvant in maternal personal air compared with those in 2-week integrated indoor air samples collected between the 32nd week of pregnancy and delivery.

	1st 2 weeksb (n = 91)	2nd 2 weeksb (n = 85)	3rd 2 weeksb (n = 72)	4th 2 weeksb (n = 49)	Averagec (n = 96)
Chlorpyrifos	0.86	0.82	0.85	0.87	0.85
Diazinon	0.89	0.87	0.88	0.88	0.90
Propoxur	0.72	0.70	0.75	0.70	0.76
Piperonyl butoxide	0.72	0.60	0.68	0.56	0.59

^aAll p-values < 0.001, Pearson’s correlation coefficient.

^bOf indoor air samplings. Missing: propoxur: 1st 2 weeks (n = 5); 2nd 2 weeks (n = 4); 3rd 2 weeks (n = 4); 4th 2 weeks (n = 3); piperonyl butoxide: 1st 2 weeks (n = 11); 2nd 2 weeks (n = 11); 3rd 2 weeks (n = 10); 4th 2 weeks (n = 8).

^cAverage levels of all indoor air samples collected in each home between the 32nd week of pregnancy and delivery.