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. 2017 Oct 12;145(15):3191–3203. doi: 10.1017/S0950268817002199

Fig. 4.

Fig. 4.

(a) Modelled seasonality through adjustment of a sinusoid to the data, for the number of C. jejuni cases (cos(2πt × 1/12) + sin(2πt × 1/12) + cos(2πt × 2/12) + sin(2πt × 2/12)), for the prevalence in chicken at retail (cos(2πt × 1/12) + sin(2πt × 1/12) + sin(2πt × 2/12)) and for the prevalence in water (sin(2πt × 1/12)). (b) Modelled seasonality through adjustment of a sinusoid to the data, for the number of C. jejuni cases (cos(2πt × 1/12) + sin(2πt × 1/12) + cos(2πt × 2/12) + sin(2πt × 2/12), for the frequency of barbequing (cos(2πt × 1/12) + sin(2πt × 1/12) + sin(2πt × 2/12)) and for the frequency of swimming in natural waters (cos(2πt × 1/12) + sin(2πt × 1/12) + sin(2πt × 2/12)).