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Table 2 Weighted censored negative binomial regression model: mean and relative number of contacts.

From: Estimating the impact of school closure on social mixing behaviour and the transmission of close contact infections in eight European countries

Category Covariate Number of Participants Mean (Std Dev) Relative no. of Reported Contacts (95% CI)
Age < 5 660 10.21 (7.65) 1.00
  5-9 661 14.81 (10.09) 1.42 (1.27, 1.56)
  10-14 713 18.69 (13.40) 1.76 (1.58, 1.94)
  15-19 685 19.93 (21.14) 1.79 (1.61, 1.97)
  20-29 879 17.18 (25.72) 1.66 (1.51, 1.81)
  30-39 815 17.83 (21.68) 1.63 (1.49, 1.78)
  40-49 908 17.51 (23.29) 1.57 (1.43, 1.70)
  50-59 906 15.96 (20.84) 1.48 (1.35, 1.62)
  60-69 728 10.51 (14.47) 1.10 (1.00, 1.21)
  70 + 270 7.71 (10.97) 0.81 (0.73, 0.89)
  Missing* 65 10.40 (12.78) 0.94 (0.65, 1.23)
Gender Female 3808 16.13 (21.93) 1.00
  Male 3429 15.14 (15.57) 0.97 (0.94, 1.01)
  Missing** 53 10.92 (8.60) 1.60 (1.06, 2.14)
House hold size 1 749 11.23 (18.26) 1.00
  2 1645 13.32 (17.89) 1.20 (1.13, 1.27)
  3 1683 14.67 (16.44) 1.23 (1.15, 1.31)
  4 2041 17.71 (17.67) 1.38 (1.29, 1.47)
  5 814 19.49 (29.12) 1.44 (1.34, 1.55)
  6+ 358 19.30 (13.14) 1.63 (1.48, 1.79)
Day of the week Sunday 862 11.98 (14.54) 1.00
  Monday 1032 16.36 (27.65) 1.35 (1.26, 1.45)
  Tuesday 1116 16.69 (20.16) 1.40 (1.31, 1.50)
  Wednesday 1017 16.93 (18.39) 1.40 (1.31, 1.50)
  Thursday 1069 16.86 (16.31) 1.41 (1.31, 1.51)
  Friday 1122 17.00 (18.25) 1.42 (1.33, 1.52)
  Saturday 936 12.85 (14.52) 1.19 (1.11, 1.28)
  Missing*** 136 12.85 (12.26) 1.44 (1.20, 1.68)
Country BE 750 19.30 (24.31) 1.00
  DE 1341 7.95 (6.26) 0.49 (0.46, 0.53)
  FI 1006 18.46 (32.15) 0.86 (0.80, 0.93)
  GB 1012 11.74 (7.67) 0.72 (0.67, 0.77)
  IT 849 19.77 (12.27) 1.18 (1.08, 1.27)
  LU 1051 17.46 (12.81) 1.02 (0.94, 1.09)
  NL 269 24.92 (42.70) 1.41 (1.25, 1.56)
  PL 1012 16.31 (11.45) 0.97 (0.89, 1.04)
Period Regular 6106 16.15 (19.64) 1.00
  Holiday 1048 12.93 (16.46) 0.91 (0.86, 0.96)
  Missing*** 136 12.85 (12.26) 1.09 (1.01, 1.16)
Overdispersion alpha    0.41 (0.40, 0.43)
  1. * Missing age was equally distributed over the other variables
  2. ** Missing gender was associated with weekday, regular period and household size 1-4.
  3. ** Missing day of the week/period was associated with DE, GB, LU and household size 2-4