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. Author manuscript; available in PMC: 2024 Jan 15.
Published in final edited form as: JAMA Netw Open. 2023 Mar 1;6(3):e232371. doi: 10.1001/jamanetworkopen.2023.2371

TABLE 1.

Sociodemographic characteristics and diet behaviors of adult study participants,a overall and by condition, 2021

All (n=2744) Control (n=649) Default (n=727) Discount (n=682) Default + Discount (n=686)
Mean (SD) or n (%) Mean (SD) or n (%) Mean (SD) or n (%) Mean (SD) or n (%) Mean (SD) or n (%)
Age 46.7 (16.0) 45.9 (15.4) 47.0 (16.3) 47.2 (16.1) 46.7 (16.1)
Female 1447 (52.7%) 344 (53.0%) 396 (54.5%) 346 (50.7%) 361 (52.6%)
Household size, total 2.3 (1.0) 2.3 (1.0) 2.3 (1.0) 2.2 (1.0) 1.1 (2.3)
Household size, children <18 years 1.4 (0.7) 1.4 (0.7) 1.4 (0.7) 1.4 (0.7) 0.7 (1.4)
Hispanic, Latino, or Spanish 269 (9.8%) 63 (9.7%) 75 (10.3%) 67 (9.8%) 64 (9.3%)
Race
American Indian or Alaska Native 39 (1.4%) 9 (1.4%) 6 (0.8%) 18 (2.6%) 6 (0.9%)
Asian 49 (1.8%) 13 (2.0%) 10 (1.4%) 10 (1.5%) 16 (2.3%)
Black or African American 390 (14.2%) 99 (15.3%) 93 (12.8%) 91 (13.3%) 107 (15.6%)
Native Hawaiian or Pacific Islander 8 (0.3%) 2 (0.3%) 2 (0.3%) 516 (75.7%) 4 (0.6%)
White 2074 (75.6%) 490 (75.5%) 562 (77.3%) 18 (2.6%) 506 (73.8%)
Other 70 (2.6%) 20 (3.1%) 15 (2.1%) 1 (0.1%) 17 (2.5%)
More than 1 12 (0.4%) 16 (2.5%) 4 (0.6%) 28 (4.1%) 7 (1.0%)
Prefer not to answer 102 (3.7%) - 35 (4.8%) - 23 (3.4%)
Education
Less than 9th grade 17 (0.6%) 4 (0.6%) 4 (0.6%) 3 (0.4%) 6 (0.9%)
9th to 12th grade - No diploma 150 (5.5%) 41 (6.3%) 36 (5.0%) 38 (5.6%) 35 (5.1%)
High school graduate 749 (27.3%) 180 (27.7%) 194 (26.7%) 175 (25.7%) 200 (29.2%)
GED or equivalent 182 (6.6%) 42 (6.5%) 53 (7.3%) 43 (6.3%) 44 (6.4%)
Some college, no degree 859 (31.3%) 201 (31.0%) 227 (31.2%) 216 (31.7%) 215 (31.3%)
Associate’s degree 367 (13.4%) 83 (12.8%) 107 (14.7%) 97 (14.2%) 80 (11.7%)
Bachelor’s degree 307 (11.2%) 69 (10.6%) 80 (11.0%) 80 (11.7%) 78 (11.4%)
Graduate or professional degree 110 (4.0%) 28 (4.3%) 26 (3.6%) 29 (4.3%) 27 (3.9%)
Prefer not to answer 3 (0.1%) 1 (0.2%) - 1 (0.1%) 1 (0.1%)
Income
<$20,000 1187 (43.3%) 266 (41.0%) 307 (42.2%) 297 (43.5%) 317 (46.2%)
$20,000–39,999 1017 (37.1%) 247 (38.1%) 278 (38.2%) 257 (37.7%) 235 (34.3%)
$40,000–59,999 348 (12.7%) 84 (12.9%) 93 (12.8%) 90 (13.2%) 81 (11.8%)
$60,000-$79,999 108 (3.9%) 25 (3.9%) 30 (4.1%) 25 (3.7%) 28 (4.1%)
$80,000-$99,999 32 (1.2%) 11 (1.7%) 7 (1.0%) 4 (0.6%) 10 (1.5%)
$100,000–119,999 10 (0.4%) 2 (0.3%) 2 (0.3%) 1 (0.1%) 5 (0.7%)
$120,000 to $139,999 3 (0.1%) 2 (0.3%) 1 (0.1%) 1 (0.1%) 2 (0.3%)
$140,000 to $159,999 4 (0.1%) 3 (0.5%) 3 (0.4%) 1 (0.1%) 2 (0.3%)
$160,000 to $179,999 3 (0.1%) 2 (0.3%) 5 (0.7%) 1 (0.1%) 3 (0.4%)
$180,000 to $199,999 3 (0.1%) 3 (0.5%) 1 (0.1%) 1 (0.1%) 3 (0.4%)
≥$200,000 6 (0.2%) 4 (0.6%) - 1 (0.1%) -
Don’t know 12 (0.4%) - - 3 (0.4%) -
Prefer not to answer 11 (0.4%) - - - -
Marital status
Married 618 (22.5%) 163 (25.1%) 141 (19.4%) 155 (22.7%) 159 (23.2%)
Widowed 191 (7.0%) 47 (7.2%) 49 (6.7%) 44 (6.5%) 51 (7.4%)
Divorced 476 (17.3%) 105 (16.2%) 139 (19.1%) 120 (17.6%) 112 (16.3%)
Separated 107 (3.9%) 30 (4.6%) 23 (3.2%) 21 (3.1%) 33 (4.8%)
Never Married 920 (33.5%) 207 (31.9%) 243 (33.4%) 241 (35.3%) 229 (33.4%)
Living with Partner 418 (15.2%) 94 (14.5%) 131 (18.0%) 99 (14.5%) 94 (13.7%)
Prefer not to answer 14 (0.5%) 3 (0.5%) 1 (0.1%) 2 (0.3%) 8 (1.2%)
Employment
Working at a job or business 845 (30.8%) 193 (29.7%) 222 (30.5%) 223 (32.7%) 207 (30.2%)
With a job or business but not at work 70 (2.6%) 18 (2.8%) 24 (3.3%) 11 (1.6%) 17 (2.5%)
Looking for work 501 (18.3%) 114 (17.6%) 137 (18.8%) 133 (19.5%) 117 (17.1%)
Not working at a job or business 1131 (41.2%) 268 (41.3%) 296 (40.7%) 281 (41.2%) 286 (41.7%)
Part-time or full-time student 103 (3.8%) 30 (4.6%) 23 (3.2%) 22 (3.2%) 28 (4.1%)
Prefer not to answer 94 (3.4%) 26 (4.0%) 25 (3.4%) 12 (1.8%) 31 (4.5%)
Food insecurityb 1917 (69.9%) 449 (69.2%) 483 (70.8%) 502 (69.1%) 483 (70.4%)
SNAP participation, currently 1842 (67.1%) 424 (65.3%) 494 (68.0%) 445 (65.2%) 479 (69.8%)
Fruit, purchased most oftenc
Apples 472 (17.2%) 102 (15.7%) 115 (15.8%) 137 (20.1%) 118 (17.2%)
Bananas 1319 (48.1%) 310 (47.8%) 348 (47.9%) 325 (47.7%) 336 (49.0%)
Grapes 390 (14.2%) 96 (14.8%) 114 (15.7%) 82 (12.0%) 98 (14.3%)
Oranges 232 (8.5%) 60 (9.2%) 54 (7.4%) 60 (8.8%) 58 (8.5%)
Strawberries 331 (12.1%) 81 (12.5%) 96 (13.2%) 78 (11.4%) 76 (11.1%)
Vegetable, purchased most oftenc
Carrots 409 (14.9%) 94 (14.5%) 107 (14.7%) 96 (14.1%) 112 (16.3%)
Lettuce 726 (26.5%) 154 (23.7%) 200 (27.5%) 186 (27.3%) 186 (27.1%)
Onions 685 (25.0%) 176 (27.1%) 190 (26.1%) 167 (24.5%) 152 (22.2%)
String beans 281 (10.2%) 70 (10.8%) 61 (8.4%) 78 (11.4%) 72 (10.5%)
Tomatoes 643 (23.4%) 155 (23.9%) 169 (23.2%) 155 (22.7%) 164 (23.9%)
BRFSS 2017 screener, times per week
Fruit juice 2.6 (4.2) 2.4 (4.0) 2.5 (4.0) 2.7 (4.2) 2.9 (4.6)
Fruit 3.9 (4.6) 3.7 (4.6) 3.9 (4.7) 3.8 (4.5) 4.1 (4.8)
Beans 2.0 (3.1) 2.1 (3.3) 1.9 (2.9) 1.9 (3.0) 2.1 (3.3)
Dark green vegetables 2.9 (3.6) 2.9 (3.9) 2.8 (3.4) 2.7 (3.3) 3.1 (3.7)
Orange-colored vegetables 2.1 (3.3) 2.0 (3.3) 2.0 (3.2) 2.0 (3.3) 2.4 (3.6)
Other vegetables 3.5 (3.9) 3.6 (4.1) 3.4 (3.9) 3.6 (4.1) 3.3 (3.5)
Total 16.9 (16.8) 16.8 (17.7) 16.4 (15.7) 16.7 (16.4) 17.9 (17.5)
Responsible for most of household food shopping
Yes 2362 (86.1%) 555 (85.5%) 618 (85.0%) 582 (85.3%) 607 (88.5%)
No 198 (7.2%) 54 (8.3%) 52 (7.2%) 59 (8.7%) 33 (4.8%)
No one person is responsible 184 (6.7%) 40 (6.2%) 57 (7.8%) 41 (6.0%) 46 (6.7%)
Responsible for most of household food preparation
Yes 2239 (81.6%) 517 (79.7%) 590 (81.2%) 563 (82.6%) 569 (82.9%)
No 327 (11.9%) 91 (14.0%) 75 (10.3%) 86 (12.6%) 75 (10.9%)
No one person is responsible 178 (6.5%) 41 (6.3%) 62 (8.5%) 33 (4.8%) 42 (6.1%)

Note: SNAP=Supplemental Nutrition Assistance Program; BRFFS=Behavioral Risk Factor Surveillance System

a

Sociodemographic and food insecurity questions were derived from the 2017–2018 National Health and Nutrition Examination Survey. We captured weekly fruit and vegetable intake using a 6-item fruit and vegetable dietary intake module from the Behavioral Risk Factor Surveillance System.

b

Based on the two-item Hunger Vital Sign food security screener, food insecurity defined as yes if a participant indicated that it was true or sometimes true that 1) their household was worried whether their food would run out before they got money to buy more, and/or 2) the food that they bought just didn’t last and they didn’t have enough money to get more.

c

The five fruit items and five vegetable items were based on expenditure data in SNAP-participating households in the Food Acquisition and Purchase Survey.