Table 1

Description of cases defined by reported COVID-19 by a physician and association with bivariable and multivariable analyses based on Mat-O-Covid index (continuous and categorised)

TotalNo of casesProportion (%)Crude ORs (95% CI)Adjusted ORs*, Mat-O-Covid index continuous (95% CI)Adjusted ORs*, Mat-O-Covid index categorised (95% CI
Sex
 Men90002622.91 1 1 1
 Women98743513.55 1.23 (1.04 to 1.45) 1.16 (0.95 to 1.43)1.17 (0.95 to 1.44)
Age3.11
 <30 years483153.91 0.98 (0.58 to 1.68) 1.15 (0.61 to 2.16) 1.13 (0.60 to 2.12)
 30–40 years46541823.15 1.25 (1.02 to 1.53) 1.32 (1.04 to 1.68) 1.32 (1.03 to 1.68)
 40–50 years68182153.05 1 1 1
 50–60 years55451692.33 0.97 (0.79 to 1.18) 1.03 (0.80 to 1.31) 1.03 (0.81 to 1.31)
 ≥ 60 years137432 0.73 (0.50 to 1.07) 0.64 (0.38 to 1.06) 0.64 (0.39 to 1.07)
Family meeting
 No662142.110.64 (0.38 to 1.10)0.70 (0.36 to 1.37)0.70 (0.36 to 1.37)
 Yes, one time1253473.751.16 (0.85 to 1.57)1.43 (1.00 to 2.06)1.44 (1.00 to 2.06)
 Yes, more than one time16 8805503.26111
Leisure activities
 No44401302.930.88 (0.72 to 1.07)0.88 (0.68 to 1.14)0.88 (0.68 to 1.13)
 Yes, one time1079393.611.09 (0.78 to 1.52)1.32 (0.90 to 1.94)1.33 (0.91 to 1.95)
 Yes, more than one time13 2724413.32111
Regular shopping
 No36961.630.49 (0.22 to 1.10)0.51 (0.19 to 1.37)0.51 (0.19 to 1.37)
 Yes, one time24952.010.60 (0.25 to 1.47)0.71 (0.26 to 1.93)0.71 (0.26 to 1.94)
 Yes, more than one time18 1655963.28111
Public places visit
 No2889772.67 0.77 (0.60 to 0.98) 0.75 (0.54 to 1.03)0.75 (0.54 to 1.03)
 Yes, one time2468692.8 0.80 (0.62 to 1.04) 0.74 (0.54 to 1.02)0.74 (0.54 to 1.02)
 Yes, more than one time13 4464643.45 1 11
Use of hand sanitiser†
 No389194.88 1.41 (0.88 to 2.26) 1.04 (0.52 to 2.06) 1.04 (0.52 to 2.05)
 Yes, after almost every outing62081642.64 0.75 (0.62 to0.90) 0.74 (0.59 to 0.93) 0.74 (0.59 to 0.92)
 Yes, systematically after each outing (or I never go out)12 2124283.5 1 1 1
Wearing mask†
 No509203.931.19 (0.74 to 1.91)1.33 (0.75 to 2.34)1.33 (0.75 to 2.34)
 Yes, after almost every outing13 5994343.190.96 (0.80 to 1.16)0.96 (0.76 to 1.21)0.96 (0.76 to 1.21)
 Yes, systematically after each outing (or I never go out)46961563.32111
Difference between questionnaires
 Less than 3 month13 1544203.19111
 3 months or more57201933.371.06 (0.89 to 1.26)1.04 (0.84 to 1.29)1.04 (0.84 to 1.29)
Mat-O-Covid Index
 Continuous variable18 8746133.25 1.03 (1.01 to 1.04) 1.02 (1.01 to 1.03)
 <13 per thousand11 5293543.07 1 1
 ≥13 per thousand1549825.29 1.76 (1.38 to 2.26) 1.58 (1.22 to 2.04)
  • Bold results: overall test, p<0.05.

  • *Adjusted for sex, age, family meeting, leisure activities, regular shopping, public places visit, use of hand sanitiser, wearing mask and time between questionnaires.

  • †Outside of work