Individual characteristics of included participants, NutriNet-Santé cohort (n=1180)
| Nutri-Score | Reference Intakes | No label | Total | |
| Total (n) | 394 | 392 | 394 | 1180 |
| Gender, n (%) | ||||
| Men | 131 (33.3) | 124 (31.6) | 152 (38.6) | 407 (34.5) |
| Women | 263 (66.7) | 268 (68.4) | 242 (61.4) | 773 (65.5) |
| Age, years | 64.8±6.9 | 64.8±7.3 | 65.4±7.1 | 65.0±7.1 |
| Educational level, n (%) | ||||
| Primary | 122 (31.0) | 102 (26.0) | 104 (26.4) | 328 (27.8) |
| Secondary | 53 (13.4) | 51 (13.0) | 74 (18.8) | 178 (15.1) |
| University, undergraduate degree | 103 (26.1) | 122 (31.2) | 99 (25.1) | 324 (27.4) |
| University, postgraduate degree | 98 (24.9) | 102 (26.0) | 103 (26.1) | 303 (25.7) |
| Other | 18 (4.6) | 15 (3.8) | 14 (3.6) | 47 (4.0) |
| Grocery shopping frequency, n (%) | ||||
| Always | 231 (58.6) | 252 (64.3) | 239 (60.6) | 722 (61.2) |
| Often | 122 (31.0) | 107 (27.3) | 113 (28.7) | 342 (29.0) |
| Sometimes | 41 (10.4) | 33 (8.4) | 42 (10.7) | 116 (9.8) |
| Online grocery shopping, yes n (%) | 119 (30.2) | 129 (32.9) | 103 (26.1) | 351 (29.7) |
| Online grocery shopping frequency, n (%) | ||||
| At least one time per week | 16 (13.4) | 20 (15.5) | 21 (20.4) | 57 (16.2) |
| One or two times per month | 22 (18.5) | 26 (20.1) | 15 (14.5) | 63 (18.0) |
| One time every 2 or 3 months | 29 (24.4) | 33 (25.6) | 17 (16.5) | 79 (22.5) |
| One or two times per year | 23 (19.3) | 21 (16.3) | 29 (28.2) | 73 (20.8) |
| Less than one time per year | 29 (24.4) | 29 (22.5) | 21 (20.4) | 79 (22.5) |
| Weekly budget for grocery shopping (€), n (%) | ||||
| <€30 | 13 (3.3) | 17 (4.3) | 16 (4.1) | 46 (3.9) |
| €30–50 | 76 (19.3) | 74 (18.9) | 63 (16.0) | 213 (18.0) |
| €50–100 | 151 (38.3) | 168 (42.9) | 160 (40.6) | 479 (40.6) |
| >€100 | 151 (38.3) | 130 (33.1) | 147 (37.3) | 428 (36.3) |
| Missing | 3 (0.8) | 3 (0.8) | 8 (2.0) | 14 (1.2) |
| Perceived nutritional knowledge, n (%) | ||||
| High | 38 (9.6) | 38 (9.7) | 22 (5.6) | 98 (8.3) |
| Intermediate | 222 (56.4) | 220 (56.1) | 233 (59.1) | 675 (57.2) |
| Low | 125 (31.7) | 125 (31.9) | 124 (31.5) | 374 (31.7) |
| No | 9 (2.3) | 7 (1.8) | 9 (2.3) | 25 (2.1) |
| Missing data | 0 | 2 (0.5) | 6 (1.5) | 8 (0.7) |
| Nutrition facts reading frequency, n (%) | ||||
| Always | 63 (16.0) | 55 (14.0) | 54 (13.7) | 172 (14.6) |
| Often | 202 (51.3) | 199 (50.8) | 206 (52.3) | 607 (51.4) |
| Sometimes | 117 (29.7) | 122 (31.1) | 119 (30.2) | 358 (30.3) |
| Never | 12 (3.0) | 14 (3.6) | 9 (2.3) | 35 (3.0) |
| Missing data | 0 | 2 (0.5) | 6 (1.5) | 8 (0.7) |
| Chronic disease diagnosed, n (%) | ||||
| Arterial hypertension | 265 (67.3) | 256 (65.3) | 254 (64.5) | 775 (65.7) |
| Diabetes mellitus | 51 (12.9) | 55 (14.0) | 67 (17.0) | 173 (14.7) |
| Cardiovascular disease | 65 (16.5) | 48 (12.2) | 66 (16.8) | 179 (15.2) |
| Dyslipidaemia | 141 (35.8) | 127 (32.4) | 132 (33.5) | 400 (33.9) |
| Obesity | 43 (10.9) | 58 (14.8) | 62 (15.7) | 163 (13.8) |
| Total cost of the shopping cart (€) | 80.0±57.8 | 73.9±48.3 | 71.2±47.3 | 75.0±51.5 |
| Number of products in the shopping cart | 22.9±21.9 | 33.6±22.0 | 31.1±21.3 | 29.2±22.2 |
| Weight of the shopping cart (kg) | 16.6±14.3 | 24.2±14.7 | 22.7±14.2 | 21.2±14.8 |
Values are mean±SD deviation or n (%) as appropriate.