Baseline characteristics of male participants in the NutriNet-Santé e-cohort (2009–2014, n=27 016) in comparison with 2009 national estimates for individuals aged ≥18 years in metropolitan France
| NutriNet-Santé: raw data, n (%) | Census estimates, %* | p Value† | ||
|---|---|---|---|---|
| Age categories (years) | <0.0001 | |||
| 18–24 | 2034 | (7.5) | 11.9 | |
| 25–39 | 7375 | (27.3) | 26.0 | |
| 40–54 | 7277 | (26.9) | 27.3 | |
| 55–64 | 6720 | (24.9) | 16.2 | |
| 65+ | 3610 | (13.4) | 18.7 | |
| Age, years, mean (SD) | 47.3 | (15.2) | ||
| Birthplace | <0.0001 | |||
| France (including Corsica and overseas territories) | 25 507 | (94.4) | 86.3 | |
| Europe (excluding France) | 518 | (1.9) | 4.4 | |
| Africa | 812 | (3.0) | 7.2 | |
| Americas | 66 | (0.2) | 0.4 | |
| Asia and Oceania | 113 | (0.4) | 1.8 | |
| Marital status | <0.0001 | |||
| Single (never married, living alone) | 4504 | (16.7) | 25.1 | |
| Widowed, divorced, separated | 2118 | (7.8) | 9.6 | |
| Married or cohabiting | 20 394 | (75.5) | 65.3 | |
| Educational level | <0.0001 | |||
| Up to secondary | 10 493 | (38.8) | 75.8 | |
| Some college | 6570 | (24.3) | 10.3 | |
| University degree | 9953 | (36.8) | 13.9 | |
| Employment status | <0.0001 | |||
| Unemployed, disabled, homemaker | 1918 | (7.1) | 4.7 | |
| Student | 1444 | (5.3) | 4.4 | |
| Farmer, manual labour | 981 | (3.6) | 25.0 | |
| Artisan, self-employed | 679 | (2.5) | 5.1 | |
| Office worker, skilled labour | 6234 | (23.1) | 22.9 | |
| Executive, professional staff | 7894 | (29.2) | 11.7 | |
| Retired | 7866 | (29.1) | 26.1 | |
| Geographical area of residence‡ | <0.0001 | |||
| Paris metropolitan area | 5825 | (21.6) | 18.4 | |
| Paris basin | 3949 | (14.6) | 17.2 | |
| North | 1281 | (4.7) | 6.2 | |
| East | 2326 | (8.6) | 8.7 | |
| East-center | 3623 | (13.4) | 12.1 | |
| West | 3803 | (14.1) | 13.7 | |
| Southwest | 2849 | (10.6) | 11.2 | |
| South–Mediterranean | 3360 | (12.4) | 12.5 | |
*Census data from INSEE (Institut national de la statistique et des études économiques).
†Results of χ2 goodness-of-fit tests using unweighted (raw) cohort data against Census estimates.
‡Geographical division based on the ZEAT (Zone d’études et d’aménagement du territoire) developed by INSEE.