Table 3.

Distribution of pertussis over years 2009 to 2019 based on age group in Anbar province, Iraq

Year	Age group					Total (%)	P-value
	less than one year (%)	1-4 Years (%)	5-14 Years (%)	15-45 Years (%)	More than 45 Years (%)
2009	4 (26.7)	7 (46.7)	3 (20.0)	1 (6.7)	0 (0.0)	15 (100.0)	0.000
2010	12 (26.1)	22 (47.8)	11 (23.9)	1 (2.2)	0 (0.0)	46 (100.0)
2011	6 (26.1)	14 (60.9)	2 (8.7)	1 (4.3)	0 (0.0)	23 (100.0)
2012	5 (22.7)	13 (59.1)	3 (13.6)	0 (0.0)	1 (4.5)	22 (100.0)
2013	16 (28.6)	26 (46.4)	10 (17.9)	3 (5.4)	1 (1.8)	56(100.0)
2014	1 (25.0)	3 (75.0)	0 (0.0)	0 (0.0)	0 (0.0)	4 (100.0)
2017	91 (25.6)	195 (54.9)	64 (18.0)	4 (1.1)	1 (0.3)	355 (100.0)
2018	20 (26.3)	31 (40.8)	19 (25.0)	5 (6.6)	1 (1.3)	76 (100.0)
2019	3 (27.3)	5 (45.5)	2 (18.2)	1 (9.1)	0 (0.0)	11 (100.0)
Total	158 (26.0)	316 (52.0)	114 (18.8)	16 (2.6)	4 (0.7)	608 (100.0)