Table 2.
User ratings of the Smiling Instead of Smoking app version 2 functions (N=95).
| User ratings | Ease of usea | Usefulb | |||
|
|
Value, mean (SD) | Very easy, n (%) | Value, mean (SD) | Very useful, n (%) | |
| System Usability Scale | |||||
|
|
SUSc scored | 79.8 (17.3) | —e | — | — |
| Happiness related tasks | |||||
|
|
Completing the positive psychology exercises every day | 2.4 (0.9) | 59 (62) | 2.2 (0.9) | 44 (47) |
|
|
Specifically, completing 3 Good Things | 2.4 (0.9) | 55 (58) | 2.2 (0.9) | 48 (51) |
|
|
Specifically, completing Savoring | 2.4 (0.8) | 56 (59) | 2.2 (0.9) | 45 (47) |
|
|
Specifically, completing Experiencing Kindness | 2.4 (0.9) | 58 (62) | 2.1 (1.0) | 45 (47) |
|
|
Specifically, completing Reliving Happy Moments | 2.5 (0.8) | 64 (67) | 2.2 (0.9) | 47 (49) |
|
|
Specifically, completing Rose, Thorn, and Bud | 2.4 (0.8) | 56 (59) | 2.1 (1.0) | 43 (45) |
|
|
Viewing the Happiness Log of past exercise completions. | 2.6 (0.7) | 70 (74) | 2.2 (0.9) | 42 (44) |
|
|
Viewing Owl Wisdoms (ie, happiness science findings) | 2.6 (0.6) | 61 (64) | 2.2 (0.9) | 45 (47) |
| Smoking specific tasks | |||||
|
|
Setting (and if applicable resetting) the quit day | 2.5 (0.8) | 62 (65) | 2.1 (1.0) | 42 (44) |
|
|
Completing the behavioral challenges | 2.5 (0.7) | 61 (64) | 2.2 (0.9) | 46 (48) |
|
|
Accessing and updating the cigarette log | 2.6 (0.7) | 70 (74) | 2.4 (0.8) | 53 (56) |
|
|
Using the Magma Bear game | 2.3 (0.9) | 54 (57) | 1.3 (1.2) | 26 (27) |
|
|
Setting and receiving Smoke Alarms | 2.4 (0.8) | 53 (56) | 2.1 (1.0) | 42 (44) |
|
|
Specifying personal reasons for quitting smoking | 2.5 (0.8) | 59 (62) | 2.3 (0.8) | 51 (54) |
|
|
Viewing strategies for remaining smoke-free | 2.5 (0.7) | 60 (63) | 2.3 (0.9) | 49 (52) |
|
|
Viewing earned badges | 2.7 (0.6) | 66 (69) | 2.0 (1.0) | 40 (43) |
|
|
Viewing benefits of quitting smoking | 2.6 (0.6) | 61 (64) | 2.2 (0.9) | 45 (48) |
aEase of use was rated on a 4-point scale: 0=not easy at all, 1=somewhat easy to use, 2=easy to use, 3=very easy to use.
bUsefulness was rated on a 4-point scale: 0=not at all useful, 1=somewhat useful, 2=useful, 3=very useful.
cSUS: System Usability Scale; scores can range from 0 (very poor perceived usability) to 100 (excellent perceived usability) in 2.5-point increments.
dA+=84.1-100; A=80.3-84.0; B=68-80.3.
eThe System Usability Scale (SUS) presents a general usability score (does not differentiate between ease of use and usefulness) and uses a different rating scale (1=strongly disagree, 5=strongly agree) than the app’s ease of use and usefulness scale (ease of use was rated as 0=not easy at all, 1=somewhat easy to use, 2=easy to use, 3=very easy to use, and usefulness was rated as 0=not at all useful, 1=somewhat useful, 2=useful, 3=very useful). For this reason, SUS values for ease of use (very easy) and useful (mean, very useful) were not included.