Table 2.

Paired t tests using a 4-wk window before and after Hurricane Ike

Quantity	Treatment	SE	Control	SE	P value	t Statistic
Messaging	0.2654	15.5189	0.3470	32.1653	0.3628	−0.9100
Posting	−0.0871	8.6791	0.1209	9.3832	0.0000	−5.8176
No. of recipients	0.0196	3.4011	0.0597	3.7235	0.0044	−2.8498