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Table 3 Haemoglobin concentration and anaemia among women enrolled in Burkina-Faso and Mali

From: Parasite clearance following treatment with sulphadoxine-pyrimethamine for intermittent preventive treatment in Burkina-Faso and Mali: 42-day in vivo follow-up study

Characteristics Burkina-Faso Mali All
Day 0    
N 311 246 557
Mean haemoglobin (SD), g/dl 10.1 (1.4) 9.6 (1.6) 9.9 (1.5)
Anaemia (<11 g/dl), n (%) 225 (72.4) 198 (80.5) 423 (75.9)
Day 14    
N 301 237 538
Mean haemoglobin (SD), g/dl 10.2 (1.3) 10.1 (1.4) 10.2 (1.3)
Anaemia (<11 g/dl), n (%) 208 (69.1) 177 (74.7) 385 (71.6)
Mean difference, 95% CIa 0.13 (0.004, 0.26) 0.44 (0.28, 0.59) 0.26 (0.16, 0.36)
Risk ratio, 95% CIb 0.96 (0.86, 1.06) 0.93 (0.84, 1.02) 0.94 (0.88, 1.01)
Day 28    
N 290 244 534
Mean haemoglobin (SD), g/dl 10.7 (1.2) 10.6 (1.2) 10.6 (1.2)
Anaemia (<11 g/dl), n (%) 171 (59.0) 153 (62.7) 325 (60.7)
Mean difference, 95% CIa 0.60 (0.46,0.74) 0.87 (0.69, 1.06) 0.72 (0.61, 0.83)
Risk ratio, 95% CIb 0.82 (0.72, 0.92) 0.78 (0.70, 0.87) 0.80 (0.74, 0.87
Day 42    
N 265 249 514
Mean haemoglobin (SD), g/dl 11.0 (1.2) 10.9 (1.3) 10.9 (1.3)
Anaemia (<11g/dl), n (%) 127 (47.9) 120 (48.2) 247 (48.1)
Mean difference, 95% CIa 0.87 (0.65, 1.09) 1.30 (1.11, 1.49) 1.06 (0.93, 1.18)
Risk ratio, 95% CIb 0.66 (0.57, 0.77) 0.60 (0.52, 0.69) 0.63 (0.57, 0.70)
  1. Notes:
  2. N, sample size; n, number of events; SD, standard deviation; g/dl, gram per decilitre; CI, confidence interval.
  3. aMean difference and 95% confidence interval for each time that haemoglobin was measured using day 0 as reference category.
  4. bRisk ratio and 95% confidence interval for each time that haemoglobin was measured using day 0 as reference category, adjusted for gravida and site (all), and for gravida (in each country).