Table 3. Correlations between directly linked individuals in one component.

	Cor.	df	p value
Age (r)	0.555 [0.439 – 0.652]	163	<0.001
Gender (rφ)	0.205 [0.054 – 0.346]	164	0.008
Education (rrank)	0.520 [0.383 – 0.653]	164	<0.001
Degree log (r)	0.010 [−0.156 – 0.176]	138	0.907
Household size log (r)	0.058 [−0.110 – 0.222]	137a	0.499
Food with log (r)	0.215 [0.051 – 0.368]	138	0.011
Number of reported symptomsb log (r)	−0.095 [−0.257 – 0.072]	138	0.266
Two or more reported symptomsb (φ)	−0.060 [−0.223 – 0.108]	138	0.488

^a One case who reported >500 household contacts was removed.

^b Based on total number of self-reported symptoms by each respondent.