Table 2.

Bivariate correlations^a for demographic and cognitive variables (survey 2010, n = 1249)

	1	2	3	4	5	6	7	8	9	10	11a	11b	12	13	14	15	16
Variable b
9 Knowledge	.07	.09	.10	.16**	.09	.09	.09	.11*	1
10 Perceived severity	.10	.16**	.08	.10	.17**	.11	.11	.09	.12**	1
11a Perceived susceptibility	.04	.06	.05	.12**	.08	.07	.04	.14**	.11**	.23**	1
11b Perceived chance	.09*	.07	.05	.14**	.07	.06	.07	.19**	.02	.11**	.42**	1
12 Perceived anxiety	.10	.18**	.07	.14**	.17**	.13**	.06	.16**	.22**	.38**	.37**	.34**	1
13 Perceived efficacy	.14	.16	.14	.18	.20*	.14	.14	.15	.14**	.14**	.09**	-.013	.19**	1
14 Perceived self-efficacy	.19	.22**	.18	.18	.18	.16	.18	.15	.08**	.17**	.06*	-.007	.17**	.40**	1
15 Intention	.14	.25**	.13	.20**	.21**	.17	.18	.19*	.09**	.26**	.13**	.06*	.29**	.43**	.78**	1
16 Behaviour	.09	.13**	.07	.08	.11*	.06	.06	.25**	.13**	.20**	.21**	.14**	.38**	.20**	.20**	.28**	1

^aCalculated using Cramérs V (for nominal vs. nominal/ordinal/interval variables) and Spearman’s Rho (for ordinal/interval vs. ordinal/interval variables);

^b1 = gender (1: male; 2: female); 2 = age (1: 18–30 yrs; 2: 30–50 yrs; 3: <50 yrs); 3 = ethnicity (1: native dutch; 2: immigrant); 4 = education (1: low; 2: intermediate; 3: high); 5 = employment status (1: unemployed/retired; 2: employed); 6 = marital status (1: single; 2: married/cohabiting; 3: divorced/widowed); 7 = children in household (1: no children; 2: one or more children < 18 yrs); 8 = contact with disease (1: no; 2: had Q fever themselves/partner/child(ren); 9 = knowledge = 0–7 items correct; number 10–15 on header row relate to the corresponding number and variable presented vertically (1–5 point likert scale); 16 = behaviour (0–5 number of preventive measures taken).

*Correlation is significant at the 0.05 level (2-tailed); ** Correlation is significant at the 0.01 level (2-tailed).