Baseline characteristics of female participants in the NutriNet-Santé e-cohort (2009–2014, n=95 896) 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 | 13 051 | (13.6) | 10.6 | |
| 25–39 | 33 487 | (34.9) | 24.0 | |
| 40–54 | 28 117 | (29.3) | 25.7 | |
| 55–64 | 16 752 | (17.5) | 15.5 | |
| 65+ | 4489 | (4.7) | 24.2 | |
| Age, years, mean (SD) | 41.3 | (14.2) | ||
| Birthplace | <0.0001 | |||
| France (including Corsica and overseas territories) | 91 197 | (95.1) | 86.8 | |
| Europe (excluding France) | 2001 | (2.1) | 4.7 | |
| Africa | 2070 | (2.2) | 6.4 | |
| Americas | 335 | (0.4) | 0.5 | |
| Asia and Oceania | 293 | (0.3) | 1.7 | |
| Marital status | <0.0001 | |||
| Single (never married, living alone) | 18 901 | (19.7) | 19.4 | |
| Widowed, divorced, separated | 10 341 | (10.8) | 21.6 | |
| Married or cohabiting | 66 654 | (69.5) | 59.0 | |
| Educational level | <0.0001 | |||
| Up to secondary | 36 851 | (38.4) | 74.5 | |
| Some college | 30 392 | (31.7) | 13.3 | |
| University degree | 28 653 | (29.9) | 12.3 | |
| Employment status | <0.0001 | |||
| Unemployed, disabled, homemaker | 13 571 | (14.2) | 12.6 | |
| Student | 9318 | (9.7) | 4.6 | |
| Farmer, manual labour | 1192 | (1.2) | 5.8 | |
| Artisan, self-employed | 1547 | (1.6) | 1.9 | |
| Office worker, skilled labour | 37 823 | (39.4) | 39.8 | |
| Executive, professional staff | 19 286 | (20.1) | 6.7 | |
| Retired | 13 159 | (13.7) | 28.6 | |
| Geographical area of residence‡ | <0.0001 | |||
| Paris metropolitan area | 20 236 | (21.1) | 18.5 | |
| Paris basin | 14 292 | (14.9) | 17.0 | |
| North | 4480 | (4.7) | 6.3 | |
| East | 7835 | (8.2) | 8.5 | |
| East-center | 12 880 | (13.4) | 12.0 | |
| West | 13 627 | (14.2) | 13.6 | |
| Southwest | 10 646 | (11.1) | 11.2 | |
| South–Mediterranean | 11 900 | (12.4) | 12.9 | |
*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.