Table 2.

Pairwise tests comparing the number of respondents recruited in paid conditions (Bonferroni-corrected threshold for statistical significance is alpha=.01).

Condition 1 (n)	Condition 2 (n)	Z score	P value
Facebook-Click (79)	Twitter-Click (25)	5.3	<.001
Facebook-Conversion (80)	Twitter-Conversion (142)	3.3	<.001
Facebook-Click (79)	Twitter-Conversion (142)	4.3	<.001
Facebook-Conversion (80)	Twitter-Click (25)	5.4	<.001
Twitter-Click (25)	Twitter-Conversion (142)	9.1	<.001
Facebook-Click (79)	Facebook-Conversion (80)	0.1	.94