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Table 1 Variation in the major clinical disease phenotypes with age, gender, ethnicity and location of residence

From: Severe and uncomplicated falciparum malaria in children from three regions and three ethnic groups in Cameroon: prospective study

Parameters N CM P value N SMA P value N UM P value N RD P value
Age group (months)            
 < 60 562 41 (7.3) 0.420 637 187 (29.4) 0.009 662 130 (19.6) <0.001 284 44 (15.5) 0.143
 ≥ 60 148 8 (5.4) 158 30 (19.0) 167 71 (42.5) 95 9 (9.5)
Gender             
 Male 409 23 (5.6) 0.449 469 118 (25.2) 0.042 487 133 (27.3) 0.473 192 23 (15.6) 0.082
 Female 375 26 (6.9) 415 130 (31.3) 432 109 (25.2) 230 30 (10.0)
Ethnicity             
 Bantu 313 21 (6.7) 0.996 358 98 (27.4) 0.368 368 103 (28.0) 0.031 177 26 (14.7) 0.827
 Semi-Bantu 352 23 (6.5) 388 111 (28.6) 409 84 (20.5) 169 21 (12.4)
 Foulbe 30 2 (6.7) 30 5 (16.7) 31 5 (16.1) 7 1 (14.3)
Location             
 Centre 163 5 (3.1) <0.001 162 61 (37.7) 0.004 163 20 (12.3) <0.001 39 11 (28.2) 0.008
 Littoral 285 32 (11.2) 277 63 (22.7) 288 19 (6.6) 29 3 (10.3)
 South West 336 12 (3.6) 446 124 (27.8) 469 203 (43.3) 354 39 (11.0)
Transmission             
 Seasonal 163 5 (3.1) 0.059 162 61 (37.7) 0.003 163 20 (12.3) <0.001 39 11 (28.2) 0.002
 Perennial 621 44 (7.1)   723 187 (25.9)   757 222 (29.3)   383 42 (11)  
  1. Each participant has been categorised into one group only which clinicians felt was the primary phenotype; Samples numbers in some of the clinical groups are lower because some parameter estimates were not taken.