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Table 1 Distribution of baseline variables

From: Nutritional status in young children prior to the malaria transmission season in Burkina Faso and Mali, and its impact on the incidence of clinical malaria

  Aug-15 Aug-16
N = 20,185 N = 4149
Burkina Faso Mali Burkina Faso Mali
N = 9889 N = 10,296 N = 2098 N = 2051
Number (%)   Number (%)  
General characteristics
 Gender
  Boy 5087 (51.4) 5290 (51.4) 1095 (52.2) 1126 (54.9)
  Girl 4802 (48.6) 5006 (48.6) 1003 (47.8) 925 (45.1)
 Age in months
  12-Mar 1540 (16.0) 1387 (14.6) 283 (13.7) 304 (15.4)
  24-Dec 2151 (22.3) 2242 (23.6) 448 (21.7) 415 (21.0)
  24–36 2124 (22.0) 2095 (22.1) 475 (23.0) 487 (24.7)
  36–48 1956 (20.2) 2044 (21.5) 449 (21.7) 395 (20.0)
  48 +  1886 (19.5) 1733 (18.2) 411 (19.9) 371 (18.8)
  Number missing 232 795 32 79
 Intervention arm
  Placebo 4907 (49.6) 5192 (50.4) 1036 (49.4) 1037 (50.6)
  AZ 4982 (50.4) 5104 (49.6) 1062 (50.6) 1014 (49.4)
 Distance to health facility
  < 1 km 1759 (17.8) 4524 (43.9) 433 (20.6) 915 (44.6)
  1–4 km 6,044 (61.1) 1608 (15.6) 1212 (57.8) 307 (15.0)
  5–9 km 1908 (19.3) 1737 (16.9) 426 (20.3) 345 (16.8)
  10 + km 178 (1.8) 2427 (23.6) 27 (1.3) 484 (23.6)
Nutritional status measures
 Height-for-age
  Median z-score [IQR] − 1.2 [− 2.0- − 0.4] − 1.2 [− 2.1- − 0.1]
  Mildly stunted (− 2 < z < − 3)    356 (17.2) 335 (17.1)
  Severely stunted (z < − 3)    164 (7.9) 204 (10.4)
  Number missing    32 91
 Weight-for-age
  Median z-score [IQR] − 1.2 [− 2.2- − 0.4] − 1.0 [− 1.9- − 0.3]
  Mildly underweight (− 2 < z < − 3)    366 (17.7) 302 (15.4)
  Severely underweight (z < − 3)    265 (12.8) 128 (6.5)
  Number missing    32 91
 Weight-for-height/length
  Median z-score [IQR] − 0.9 [− 2.0- 0.0] − 0.6 [− 1.5- 0.1]
  Mildly wasted (− 2 < z < − 3)    260 (12.4) 186 (9.1)
 Severely wasted (z < − 3)    292 (13.9) 131 (6.4)
  Number missing    0 12
 MUAC
  Median MUAC in mm [IQR] 145 [136–152] 145 [135–155] 145 [136–152] 145 [139–155]
  Moderately low MUAC (125-135 mm) 1762 (17.8) 1781 (17.6) 395 (18.8) 310 (15.2)
  Severely low MUAC (< 125 mm) 578 (5.8) 768 (7.6) 112 (5.3) 105 (5.2)
  Number missing 0 147 0 14
 MUAC-for-age
  Median z-score [IQR] − 0.8 [− 1.4 to − 0.1] − 0.7 [− 1.4 to 0.0] − 0.8 [− 1.4 to − 0.2] − 0.6 [− 1.2 to 0.0]
  Low MUAC-for-age (− 2 < z < − 3) 807 (8.4) 745 (8.0) 145 (7.0) 112 (5.7)
  Very low MUAC-for-age (z < − 3) 126 (1.3) 184 (2.0) 28 (1.4) 21 (1.1)
  Number missing 334 924 42 93
  1. Both cohorts (2015 and 2016) are presented with their nutritional measurements