Table 1.

Search strings used for evaluation of the literacy demands of self-directed learning resources on emergency preparedness for U.S. families

Concept	Search string a
General Search
Emergency Preparedness	“Emergency Preparedness”
Disaster Preparedness	“Disaster Preparedness”
Emergency Readiness	“Emergency Readiness”
Disaster Readiness	“Disaster Readiness”
Children’s Emergency Preparedness	“Emergency Preparedness” AND (Child* OR Famil*)
Children’s Disaster Preparedness	“Disaster Preparedness” AND (Child* OR Famil*)
Targeted Searches
Blizzards	(Blizzard* OR (Ice Storm*) OR (Snow Storm*) OR (Winter Storm*)) AND “Preparedness”
Droughts	Drought* AND “Preparedness”
Earthquakes	(Earthquake* OR Quake* OR Tremor* OR Temblor*) AND “Preparedness”
Floods	Flood* AND “Preparedness”
Heat Waves	(Heat Wave*) AND “Preparedness”
Hurricanes	(Hurrican* OR Typhoon* OR (Tropical Storm*)) AND “Preparedness”
Thunderstorms	(Thunderstorm* OR (Electrical Storm*) OR (Lightning Storm*) OR Thundershower*) AND “Preparedness”
Tornadoes	(Tornado* OR Twister* OR Cyclon*) AND “Preparedness”
Volcanic Eruptions	(Volcan* OR Erupt*) AND “Preparedness”
Wildfires	(Wildfire* OR (Brush Fire*) OR (Forest Fire*)) AND “Preparedness”

^aIdentical search strings were applied to Google.com, Yahoo.com, and Bing.com