Table 4. Testing the effect of participant characteristics and behaviour on the proportion of participants who helped at the second opportunity, given that they had offered help at the first opportunity, P(B|A).

Effect	Estimate	s.e.	z value	p value
intercept	−2.90	2.14	−1.36	0.18
cost	−0.15	0.07	−2.15	3.14 × 10−2
gender (male)	0.74	0.29	2.55	1.08 × 10−2
age	−0.04	0.02	−2.39	1.70 × 10−2
training 1	0.26	0.20	1.34	0.18
training 2	0.38	0.30	1.29	0.20

Binomial GLM (logit link function). Response variable: Boolean indicating whether event B occurred given that A had occurred. The table shows the estimate, standard error and statistical test results for the explanatory variables in the model.