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Table 1 Comparison of the occurrence rate of syndromes in Plasmodium positive and Plasmodium negative patient groups

From: Distribution of Plasmodium falciparum gametocytes and malaria-attributable fraction of fever episodes along an altitudinal transect in Western Cameroon

Prevalence of signs and symptoms at the different study sites of the altitudinal transect
Syndromes Santchou (750 m) Dschang (1400 m) Djuttitsa (1965 m)
PPP (No P) PNP (No P) Comparison PPP (No P) PNP (No P) Comparison PPP (No P) PNP (No P) Comparison
Fever* 71.18 49.63 χ 2 = 25.23 74.94 40.21 χ 2 = 15.33 74.43 30.22 χ 2 = 11 .23
p ≤ 10−5 p ≤ 10−5 p ≤ 10−5
Average temperature 38.6 (341) 36.7 (336) t = 9.76 38.7 37,3 t = 11.76 39.2 (169) 37,1 (567) t = 13.02
p = 0.04 p = 0.02 p = 0.01
(SG) (966) (1462) (SG) (SG)
Headache* 36.7 (245) 12.5 (432) χ 2 = 54.83 19.90 (608) 1.70 (1820) χ 2 = 257.19 31.91 (141) 3.53 (595) χ 2 = 112.51
p ≤ 10−7 p ≤ 10−7 p ≤ 10−7
(SG) (SG) (SG)
Joint pains* 27.35 (245) 13.89 (432) χ 2 = 18.58 26.32 (608) 1.81 (1820) χ 2 = 373.95 31.21 (141) 4.20 (595) χ 2 = 97.84
p ≤ 10−5 p ≤ 10−7 p ≤ 10−7
(SG) (SG) (SG)
Abdominal pains* 19.18 (245) 49.07 (432) χ 2 = 11.07 24.34 (608) 3.79 (1820) χ 2 = 236.50 17.73 (141) 6.39 (595) χ 2 = 18.74
p ≤ 10−4 p ≤ 10−7 p ≤ 10−5
(SG) (SG) (SG)
Convulsion* 4.08 (245) 0.93 (432) χ 2 = 7.69 0.66 (608) 0.05 (1820) χ 2 = 8.06 1.42 (141) 0.34 (595) χ 2 = 7.69
p ≤ 10−3 p ≤ 0.02 p ≤ 10−3
(SG) (SG) (SG)
Nausea* 6.53 (245) 2.78 (432) χ 2 = 4.66 0.99 (608) 0.22 (1820) χ 2 = 6.54 0.71 (141) 0.34 (595) χ 2 = 4.66
p ≤ 0.02 p ≤ 0.02 p ≤ 0.02
(SG) (SG) (SG)
Asthenia 23.27 (245) 20.37 (432) χ 2 = 0.78 8.22 (608) 1.65 (1820) χ 2 = 61.84 13.48 (141) 2.02 (595) χ 2 = 37.09
p ≤ 0.38 p ≤ 10−7 p ≤ 10−7
(NS) (SG) (SG)
Anorexia 20.00 (245) 18.52 (432) χ 2 = 0.22 18.09 (608) 1.92 5 (1820) χ 2 = 212.19 11.35 (141) 2.02 (595) χ 2 = 27.12
p ≤ 0.64 p ≤ 10−7 p ≤ 10−7
(NS) (SG) (SG)
Constipation 1.22 (245) 7.17 (432) χ 2 = 11.61 1.64 (608) 0.82 (1820) χ 2 = 3.01 2.13 (141) 0.34 (595) χ 2 = 5.42
p ≤ 10−4 p ≤ 0.08 p ≤ 10−4
(SG) (NS) (SG)
Diarrhoea 2.45 (245) 16.90 (432) χ 2 = 31.67 1.15 (608) 1.00 (1820) χ 2 = 0.12 2.13 (141) 2.52 (595) χ 2 = 31.67
p ≤ 10−7 p ≤ 0.73 p ≤ 10−7
(SG) (NS) (SG)
Vomiting 4.90 (245) 7.41 (432) χ 2 = 1.62 3.29 (608) 1.00 (1820) χ 2 = 15.66 1.42 (141) 2.69 (595) χ 2 = 1.62
p ≤ 0.20 p ≤ 10−5 p ≤ 0.20
(NS) (SG) (NS)
Itches 0.41 (245) 2.31 (432) χ 2 = 3.56 0.80 (608) 0.38 (18200 χ 2 = 0.04 0.71 (141) 0.50 (595) χ 2 = 3.56
p ≤ 0.06 p ≤ 0.85 p ≤ 0.06
(NS) (NS) (NS)
Dizziness 1.63 (245) 3.70 (4320) χ 2 = 2.34 2.80 (608) 0.77 (1820) χ 2 = 14.85 2.13 (141) 0.50 (595) χ 2 = 2.34
p ≤ 0.13 p ≤ 10−4 p ≤ 0.13
(NS) (SG) (NS)
  1. PPP = % of Plasmodium positive patients, PNP = % of Plasmodium negative patients, No P = Number of patients examined, SG = significant, NS = not significant, * = malaria related manifestation in all the 3 sites.