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Table 2  A 6 years retrospective trend of malaria cases in the two localities of Dembiya District (2012–2017)

From: Malaria prevalence and associated risk factors in Dembiya district, North-western Ethiopia

No. of malaria parasite positive cases (values in parenthesis are %malaria cases)
Study sites Arebiya Guramba Bata
Age No. examined P.f (%) P.v (%) Mixed (%) Total +ve(%)a No. Examined P.f (%) P.v (%) Mixed (%) Total +ve(%)b
 < 5 63 2 (3.2) 4 (6.3) 0 6 (9.5) 66 9 (13.6) 8 (12.1) 0 17 (25.8)
 6–17 553 23 (4.2) 17 (3.1) 0 40 (7.2) 418 23 (5.5) 8 (1.9) 8 (1.9) 39 (9.3)
 18–64 792 187 (23.6) 27 (3.4) 12 (1.5) 226(28.5) 213 114 (53.5) 20 (9.4) 9 (4.2) 143 (67.1)
 > 65 41 9 (21.9) 0 0 9 (21.9) 11 0 4 (36.2) 0 4 (36.4)
 Total 1449 221 (15.3) 48 (3.3) 12 (0.8) 281 (19.4) 708 146 (20.6) 40 (5.6) 17 (2.5) 203 (28.7)
No. of malaria parasite positive cases (values in parenthesis are %malaria cases)
Study sites Arebiya Guramba Bata
Sex No. examined P.f (%) P.v (%) Mixed (%) Total +ve (%)c No. examined P.f (%) P.v (%) Mixed (%) Total +ve (%)d
 Male 931 207 (22.2) 36 (3.9) 11 (1.2) 254 (27.3) 398 110 (27.6) 23 (5.8) 10 (2.5) 143 (35.9)
 Female 518 14 (2.7) 12 (2.3) 1 (0.2) 27 (5.2) 310 36 (11.6) 17 (5.5) 7 (2.3) 60 (19.4)
Total 1449 221 (15.3) 48 (3.3) 12 (0.8) 281 (19.4) 708 146 (20.6) 40 (5.6) 17 (2.4) 203 (28.7)
  1. aχ2 = 111.8, df = 3, p = 0.000; bχ2 = 231.7, df = 3, p = 0.000; cχ2 = 102.3, df = 1, p = 0.000; dχ2 = 21.7, df = 1, p = 0.000