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Table 2 Socio-demographic characteristics, exposure and health characteristics of participants of the study according to the season

From: Determinants and risk factors of gastroenteritis in the general population, a web-based cohort between 2014 and 2017 in France

Variables Season 2014–2015
n (%)
Season 2015–2016
n (%)
Season 2016–2017
n (%)
Socio-demographic characteristics  
 Gender (m.d. = 0)
  Female 2326 (60%) 2942 (60%) 3113 (60%)
  Male 1579 (40%) 1964 (40%) 2051 (40%)
 Age (m.d. = 18)
  [0–10[ 98 (3%) 188 (4%) 175 (3%)
  [10–15[ 104 (3%) 128 (3%) 115 (2%)
  [15–60[ 1970 (50%) 2541 (52%) 2660 (52%)
   > 60 1732 (44%) 2042 (42%) 2205 (43%)
 Household composition (m.d. =49)
  Living alone 614 (16%) 765 (16%) 838 (16%)
  Living with ≥1 child 1219 (31%) 1590 (33%) 1634 (32%)
  Living with adults only 2059 (53%) 2532 (52%) 2675 (52%)
 Main activity (m.d. = 258)
  Working 1822 (48%) 2320 (48%) 2453 (48%)
  Student 344 (9%) 487 (10%) 456 (9%)
  Unemployed 109 (3%) 133 (3%) 128 (3%)
  Retired 1411 (37%) 1702 (35%) 1846 (36%)
  Stay at home/Sick leave 148 (4%) 171 (4%) 187 (4%)
 Level of education (m.d. = 90)
  Middle school diploma 613 (16%) 707 (15%) 814 (16%)
  High school diploma 696 (18%) 861 (18%) 944 (18%)
  Higher education 2223 (57%) 2807 (58%) 3043 (59%)
  Not concerneda 336 (9%) 498 (10%) 343 (7%)
 Place of residency (m.d. = 0)
  Urbain 3145 (81%) 3973 (81%) 4161 (81%)
  Rural 760 (19%) 933 (19%) 1003 (19%)
Exposure
 Use of public transportation (m.d. = 0)
  Yes 605 (15%) 770 (16%) 813 (16%)
  No 3300 (85%) 4136 (84%) 4351 (84%)
 Contacts (m.d. = 0)
  Contact with patients 388 (10%) 476 (10%) 555 (11%)
  Contact with elderly 401 (10%) 486 (10%) 537 (10%)
  Contact with a group of people (≥10) 1230 (31%) 1533 (31%) 1677 (32%)
  Contact with children 952 (24%) 1213 (25%) 1223 (24%)
 Pets at home (m.d. = 22)
  None 2127 (55%) 2711 (55%) 2851 (55%)
  At least one 1774 (45%) 2187 (45%) 2303 (45%)
 Health characteristics
  Common colds frequency (m.d. = 358)
  Never 1749 (45%) 2079 (44%) 2248 (44%)
  Rare 1401 (36%) 1740 (37%) 1890 (37%)
  Often 698 (18%) 898 (19%) 914 (18%)
 Smoking status (m.d. = 16)
  Non smoker 3492 (90%) 4377 (89%) 4597 (89%)
  Smoker 406 (10%) 525 (11%) 562 (11%)
 Comorbidities (m.d. = 0)
  No comorbidities 3094 (79%) 3827 (78%) 4066 (79%)
  At least one comorbidityb 811 (21%) 1079 (22%) 1098 (21%)
  Treated asthma 219 (6%) 319 (7%) 303 (6%)
  Treated diabetes 139 (4%) 184 (4%) 203 (4%)
  Treated heart condition 397 (10%) 501 (10%) 502 (10%)
  Treated kidney condition 22 (1%) 36 (1%) 29 (1%)
  Treated immunosuppression 109 (3%) 144 (3%) 133 (3%)
  Treated pulmonary condition 102 (3%) 139 (3%) 124 (2%)
 Respiratory allergy (m.d. = 0)
  None 2609 (67%) 3267 (67%) 3378 (65%)
  At least one 1296 (33%) 1639 (33%) 1786 (35%)
 Pregnancy (m.d. = 67)
  Yes 39 (1%) 56 (1%) 50 (1%)
  No 660 (17%) 871 (18%) 962 (19%)
  Not concernedc 3191 (82%) 3943 (81%) 4136 (80%)
 BMI (m.d. = 229)
  Underweight (< 18.5) 185 (5%) 207 (4%) 231 (5%)
  Normal weight ([18.5–25[) 2208 (57%) 2791(58%) 2911 (57%)
  Overweight ([25–30[) 1027 (27%) 1292 (27%) 1368 (27%)
  Obese (> 30) 424 (11%) 526 (11%) 576 (11%)
  1. m.d. missing data. The number correspond to the total of missing data for both seasons
  2. aChildren and students not having finished their studies
  3. bParticipants having responded they are taking medication for at least one of the condition listed below
  4. cWomen under 15 or above 55 and men