BMC Infectious Diseases

Table 1 Peak month, Amplitude and Significance of tests for seasonal trends in total and positive Monospot test results by age and gender

From: The epidemiology of infectious mononucleosis in Northern Scotland: a decreasing incidence and winter peak

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.

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ISSN: 1471-2334

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