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. 2024 Feb 27;8:e48954. doi: 10.2196/48954

Table 1.

Characteristics of US adults participating in a novel 2-phase ecological momentary assessment–based study assessing the validity of a novel delay discounting tool, 2020-2021 (N=97).

Characteristics Values
Sex, n (%)

Male 25 (26)

Female 72 (74)
Race, n (%)

Asian 24 (25)

Black 9 (9)

White 56 (58)

2 or more races 8 (8)
Age group (years), n (%)

18-25 28 (29)

26-35 25 (26)

36-50 26 (27)

51-70 16 (17)

>71 2 (2)
Income (US $), n (%)

<$30,000 30 (31)

$30,000-$49,999 19 (20)

$50,000-$74,999 19 (20)

$75,000-$100,000 19 (20)

>$100,000 10 (10)
Number of surveys completed per person

Mean (SD) 16 (4)

Range 1-19
Percentage of surveys reflecting substance use or craving

Alcohol use


Mean (SD) 4 (9)


Range 0-53

Cannabis use


Mean (SD) 4 (14)


Range 0-73

Tobacco use


Mean (SD) 6 (21)


Range 0-100

Alcohol craving


Mean (SD) 8 (18)


Range 0-100

Cannabis craving


Mean (SD) 8 (20)


Range 0-100

Tobacco craving


Mean (SD) 7 (22)


Range 0-100