Table 1.

Results of In Vitro Water Flow Chamber Experiments

Experiment	0 min	1 min	3 min	5 min	10 min	Time-Weighted Average	P Value*
50–100-nm
Control	1	0.899 ± 0.068	1.119 ± 0.254	1.009 ± 0.022	1.056 ± 0.056	1.026 ± 0.038 (0.930–1.121)
Large magnet	1	0.173 ± 0.072	0.032 ± 0.014	0.017 ± 0.010	0.012 ± 0.006	0.092 ± 0.015 (0.054–0.129)	< .05
Small magnet	1	0.334 ± 0.099	0.137 ± 0.054	0.065 ± 0.030	0.033 ± 0.009	0.158 ± 0.035 (0.072–0.245)	< .05
1–5-μm
Control	1	0.886 ± 0.058	1.086 ± 0.243	0.980 ± 0.197	1.004 ± 0.176	0.994 ± 0.169 (0.575–1.414)
Large magnet	1	0.240 ± 0.036	0.081 ± 0.049	0.018 ± 0.009	0.011 ± 0.014	0.111 ± 0.010 (0.085–0.137)	< .05
Small magnet	1	0.329 ± 0.032	0.097 ± 0.016	0.037 ± 0.004	0.010 ± 0.006	0.134 ± 0.009 (0.112–0.156)	< .05

Note–Values presented as mean ± standard deviation. Values in parentheses are 95% confidence intervals.

^*Concentrations in water were lower in experimental runs with the magnet compared with matched controls by analysis of variance with Student–Newman–Keuls pairwise comparisons.