Table 1.

Distribution of age and severity of symptoms (n = 355)

	Severity of symptoms
Age (years)	Mild	Moderate	Severe	Total
Males
10–19	3	4		7
20–29	8	4	9	21
30–39	12	14	6	32
40–49	12	14	8	34
50–59	12	9	11	32
60–69	10	12	12	34
70–79	11	16	8	35
80+	4	2		6
Total	72	75	54	201
Females
10–19	0	1	3	4
20–29	9	5	5	19
30–39	7	13	10	30
40–49	5	14	7	26
50–59	4	9	5	18
60–69	7	12	7	26
70–79	11	10	4	25
80+		3	3	6
Total	43	67	44	154
Total no.	115	142	98	355