Table 1.

Peak month, Amplitude and Significance of tests for seasonal trends in total and positive Monospot test results by age and gender

Positive test results
	Numbers analysed	Peak month	Amplitude (%)	Crude 95% CI*	Edwards’ & Roger’s P
All tests
0-14	1150	March	31.3	31.0-31.5	<0.0001
15-24	6119	February	14.3	14.2-14.3	<0.0001
25-44	1156	March	1.9	1.7-2.1	0.9
>45	222	August	18.3	17.0-19.6	0.3
All ages	8647	February	13.8	13.8-14	<0.0001
Female
0-14	691	March	32.4	32.0-32.8	<0.0001
15-24	3300	February	16.2	16.1-16.3	<0.0001
25-44	554	February	8.1	7.6-8.6	0.1
>45	101	April	29.1	26.3-31.8	0.3
All ages	4646	February	16.6	16.6-17.0	<0.0001
Male
0-14	459	March	29.9	29.3-30.5	<0.0001
15-24	2819	February	11.9	11.8-12.0	<0.0001
25-44	602	July	4.4	3.9-4.9	0.6
>45	121	August	20.3	18.1-22.7	0.2
All ages	4001	February	10.5	10.5-10.6	<0.0001
Total tests performed
	Numbers analysed	Peak month	Amplitude (%)	Crude 95% CI*	Edwards’ & Roger’s P
All tests
0-14	9884	February	34.5	34.4-34.5	<0.0001
15-24	30663	February	12.2	12.2-12.2	<0.0001
25-44	17615	April	12.9	12.9-12.9	<0.0001
>45	4066	March	13.0	12.9-13.1	<0.0001
All ages	62228	February	13.8	13.8-13.8	<0.0001
Female
0-14	5565	February	32.1	32.0-32.2	<0.0001
15-24	18873	February	13.1	13.1-13.1	<0.0001
25-44	10936	March	16.6	16.5-16.6	<0.0001
>45	2449	March	17.0	16.9-17.1	<0.0001
All ages	37823	February	14.4	14.4-14.4	<0.0001
Male
0-14	4319	February	37.6	37.5-37.7	<0.0001
15-24	11790	February	10.8	10.8-10.9	<0.0001
25-44	6679	April	6.9	6.9-7.0	0.009
>45	1617	March	7.5	7.4-7.7	0.1
All ages	24405	February	12.8	12.8-12.9	<0.0001

*CI: 95% Confidence intervals.