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. Author manuscript; available in PMC: 2021 Feb 1.
Published in final edited form as: Disaster Med Public Health Prep. 2019 Aug 6;14(4):449–458. doi: 10.1017/dmp.2019.62

Table 4.

Assessment tool scores for evaluation of the literacy demands of self-directed learning resources on emergency preparedness for U.S. families, by information source, audience type, and disaster type

Literacy Assessment Tool, Mean (SD)
Characteristics N Flesch-Kincaid b PMOSE/IKIRSCH b SAM c NLM/NIA c CDC CCI c
Overall 386 9.6 (2.1) 3.5 (1.0) 61.6 (12.3) 16.9 (1.7) 66.6 (15.3)

Information Source

Government Institution 119 9.9 (2.3) 3.7 (1.1) 60.5 (13.5) 17.1 (1.6) 64.3 (16.1)
News Organization 41 9.1 (2.0) 3.0 (1.0)** 60.2 (8.3) 15.5 (1.2)** 64.7 (10.4)
Educational Institution 33 9.2 (0.8) 3.6 (1.2) 62.8 (13.2) 16.1 (1.4)** 68.8 (12.4)
Healthcare Institution a 0 --- --- --- --- ---
Non-Profit Organization 81 9.5 (2.2) 3.6 (1.1) 65.0 (11.2)* 17.1 (1.7) 66.9 (16.0)
Private Company 98 9.4 (2.0) 3.3 (0.6) 60.5 (11.6) 16.8 (1.6) 69.2 (13.5)
Other 14 8.6 (2.1) 3.3 (0.5) 59.4 (13.8) 16.8 (2.7) 67.0 (20.1)

Audience Type

Parents/caregivers of CSHCN 18 8.3 (1.2)* 5.3 (2.9)** 68.7 (7.4)* 16.8 (2.4) 75.7 (10.0)*
Parents/caregivers of children (not CSHCN) 54 9.4 (2.3) 3.7 (0.7) 70.2 (10.7)** 17.9 (1.6)** 73.5 (15.5)**
Children a 0 --- --- --- --- ---
General 272 9.5 (2.1) 3.4 (0.8) 60.2 (11.9) 16.8 (1.5) 65.5 (14.8)
Other clearly specified audience 42 10.6 (2.1)** 3.5 (0.8) 59.2 (13.8) 16.1 (1.9)** 63.8 (16.8)

Disaster Type

Blizzards 25 8.9 (1.6) 3.6 (1.3) 58.7 (13.7) 16.7 (1.6) 71.3 (13.7)
Droughts 16 10.5 (2.0) 3.0 (0.0) 62.9 (13.5) 15.5 (1.6)** 67.3 (18.7)
Earthquakes 39 8.9 (1.6) 3.5 (0.6) 64.2 (10.5) 16.7 (1.8) 66.1 (12.3)
Floods 33 9.5 (2.0) 3.9 (1.1)* 60.8 (10.0) 16.4 (2.0) 61.1 (21.4)
Heat Waves 26 8.7 (1.4)* 3.4 (0.6) 64.7 (11.5) 17.2 (1.4) 64.6 (13.7)
Hurricanes 31 9.5 (2.8) 3.5 (0.6) 61.6 (11.1) 17.5 (1.5) 64.6 (13.8)
Thunderstorms 33 8.9 (1.4) 3.3 (0.7) 58.4 (14.5) 16.8 (1.3) 62.0 (9.0)
Tornadoes 38 9.6 (1.8) 3.4 (0.8) 62.0 (14.5) 17.0 (1.6) 65.4 (16.5)
Volcanic Eruptions 47 9.9 (1.8) 3.2 (0.4) 62.5 (9.7) 16.9 (1.8) 68.5 (13.8)
Wildfires 26 9.6 (2.0) 3.8 (1.1) 62.4 (17.6) 16.6 (1.7) 68.3 (15.9)
General 72 9.6 (1.3) 3.2 (0.3)* 63.1 (8.8) 16.7 (1.3) 68.4 (10.2)

Notes.

CSHCN: Children with Special Health Care Needs. SD: Standard Deviation.

Flesch-Kincaid: Flesch-Kincaid Grade Level,21 Range: 0.0-12.0.

PMOSE/IKIRSCH: Peter Mosenthal and Irwin Kirsch Document Complexity Level,22 Range: 1.0-5.0.

SAM: Suitability Assessment of Materials Score,23 Range: 0.0-100.0.

NLM/NIA: National Library of Medicine/National Institute on Aging Web Usability Guidelines Score,24 Range: 0.0-25.0. CDC CCI: Centers for Disease Control and Prevention Clear Communication Index Score,25 Range: 0.0-100.0.

*

p<0.05,

**

p<0.01,

p<0.10.

a

Although this category was explicitly indicated in searches, no websites were ultimately included in this category.

b

A lower score for this tool is “better” (i.e., has lower literacy demands).

c

A higher score for this tool is “better” (i.e., has lower literacy demands).