Table 2. Analysis of Respiratory Symptoms and Peak Flow measured by Peak Flow Meter by Study Day.

Table 2. Report of Symptoms and Peak Flow: Entire Subpopulation
Study Day	N	Non-exposure		Exposure
		Mean +/- Standard Deviation	Range	Mean +/- Standard Deviation	Range	Difference from Pre-beach Exposure (p value)	Difference from Post-beach Exposure (p value)
Number of Symptoms
Pre-beach exposure	51	1.37+/-1.71	0-6.00	1.33+/-1.54	0-6.00	NS	N/A
1 hour Post-beach Exposure	52	1.28+/-1.48	0-6.00	3.08+/-2.18	0-8.00	N/A	*
Follow-up Day 1	52	1.19+/-1.24	0-4.00	2.02+/-2.01	0-7.00	NS	<0.0001
Follow-up Day 2	52	1.15+/-1.36	0-4.00	1.64+/-1.97	0-8.00	NS	<0.0001
Follow-up Day 3	52	1.09+/-1.56	0-6.00	1.53+/-1.85	0-8.00	NS	<0.0001
Follow-up Day 4	52	0.94+/-1.31	0-6.00	1.35+/-1.75	0-8.00	NS	<0.0001
Follow-up Day 5	52	1.02+/-1.43	0-6.00	1.28+/-1.67	0-8.00	NS	<0.0001

Table 2. Report of Symptoms and Peak Flow: Entire Subpopulation
Study Day	N	Non-exposure		Exposure
		Mean +/- Standard Deviation	Range	Mean +/- Standard Deviation	Range	Difference from Pre-beach Exposure (p value)	Difference from Post-beach Exposure (p value)
Peak Flow (L/second) measured by peak flow meter
1 hour Post-beach Exposure	52	0.422+/-0.118	0.230-0.750	0.424+/-0.127	0.169-0.800	N/A**	*
Follow-up Day 1	52	0.409+/-0.118	0.200-0.700	0.404+/-0.119	0.144-0.750	N/A**	<0.0001
Follow-up Day 2	52	0.415+/-0.125	0.225-0.770	0.407+/-0.135	0.168-0.871	N/A**	<0.0001
Follow-up Day 3	52	0.411+/-0.125	0.200+/-0.740	0.397+/-0.128	0.184-0.800	N/A**	<0.0001
Follow-up Day 4	52	0.413+/-0.126	0.210-0.800	0.402+/-0.130	0.154-0.800	N/A**	<0.0001
Follow-up Day 5	52	0.415+/-0.132	0.230-0.850	0.401+/-0.130	0.118-0.800	N/A**	<0.0001

³N/A= not applicable; NS= not statistically significant;

^*= Statistically significant model for both Day and Exposure (p<0.0001);

^**=Pre-beach exposure peak flow not available (only through spirometry)