Table 2.

Statistical relationships of several measures of lozenge zinc on duration of common colds utilizing Pearson correlations weighted by sample size analysis.

	Statistics without Smith et al. [40] outlier	Statistics with Smith et al. [40] outlier
Lozenge iZn/mean duration	r (14) = 0.84, P < 0.001	r (15) = 0.62, P = 0.015
Lozenge iZn/median duration	r (13) = 0.73, P = 0.004	r (14) = 0.53, P = 0.050
Total daily lozenge iZn/mean duration	r (12) = 0.83, P = 0.001	r (13) = 0.48, P = 0.099, ns
Total daily lozenge iZn/median duration	r (13) = 0.77, P = 0.002	r (14) = 0.59, P = 0.027
Lozenge zinc (iZn + bound)/mean duration	r (14) = 0.12, P = 0.345, ns	r (15) = 0.08, P = 0.395, ns
Lozenge zinc (iZn + bound)/median duration	r (13) = 0.28, P = 0.282, ns	r (14) = 0.23, P = 0.219, ns
Total daily lozenge zinc (iZn + bound)/mean duration	r (13) = 0.14, P = 0.641, ns	r (14) = 0.10, P = 0.742, ns
Total daily lozenge zinc (iZn + bound)/median duration	r (13) = 0.26, P = 0.401, ns	r (14) = 0.19, P = 0.515, ns