. 2021 Aug 10;23(8):e29026. doi: 10.2196/29026

Table 2.

System Usability Scale scores for each end user group (N=2066)^a.

End user group	Participants, n (%)	SUS^b, mean (SD)
Community members	809 (39.1)	73.53 (13.43)
People who use crystal methamphetamine	553 (26.7)	71.73 (13.31)
Family and friends	419 (20.2)	74.12 (13.92)^c
Health professionals	285 (13.7)	75.91 (11.41)^d

^aA total of 42 participants were excluded from the analyses because they selected unsure when asked if they had visited the Cracks in the Ice website.

^bSUS: System Usability Scale.

^cP=.02.

^dP<.01.