Table 2.

Mean number (s.d.) of reported encounters by different contact type. Number of encounters reported during term time and holiday period compared

Contact levels	Age (years)	Term time	Holiday	Difference	P value†
All contact	Total	20·0 (11·7)	12·6 (10·7)	7·36 (9·78)	<0·0001*
	0–5	0·33 (1·5)	0·67 (3·1)	−0·33 (3·2)	0·3211
	6–12	1·29 (3·3)	1·6 (3·8)	−0·30 (3·3)	0·2721
	13–19	13·8 (9·9)	5·0 (7·0)	8·84 (8·3)	<0·0001*
	20–39	2·14 (2·5)	1·9 (2·4)	0·21 (2·3)	0·2948
	40–59	2·1 (2·3)	3·0 (3·8)	−0·88 (3·2)	0·0962
	⩾60	0·3 (0·7)	0·4 (1·2)	−0·17 (1·1)	0·0171*
Physical contact	Total	4·4 (5·8)	2·8 (4·16)	1·5 (5·46)	0·1422
	0–5	0·2 (1·4)	0·08 (0·3)	0·12 (1·44)	0·40
	6–12	0·2 (0·9)	0·7 (2·1)	−0·41 (2·20)	0·34
	13–19	3·52 (5·2)	1·2 (2·6)	2·36 (5·50)	0·41
	20–39	0·12 (0·6)	0·21 (0·6)	−0·09 (0·90)	0·43
	40–59	0·27 (0·6)	0·62 (1·1)	−0·36 (1·15)	0·07
	⩾60	0·02 (0·2)	0·10 (0·4)	−0·08 (0·43)	1·00

^†Wilcoxon signed-rank test.

^*P < 0·05.