Table 3. Value of parameter p in different age groups.

Age groups (years)	No. of symptomatic	No. of asymptomatic	p (%)
First time
0–5	54	37	40.66
6–14	76	35	31.53
15–24	37	31	45.59
25–59	20	17	45.95
≥60	10	20	66.67
Second time
0–5	45	43	48.86
6–14	43	24	35.82
15–24	31	22	41.51
25–59	43	25	36.76
≥60	30	19	38.78
Third time
0–5	47	40	45.98
6–14	19	40	67.80
15–24	28	44	61.11
25–59	19	24	55.81
≥60	23	25	52.08
Sum of the three times
0–5	146	120	45.11
6–14	138	99	41.77
15–24	96	97	50.26
25–59	82	66	44.59
≥60	63	64	50.39
Total	525	446	45.93