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Table 1 Participants’ characteristics and the mean haemoglobin status of 2436 pregnant women

From: Haemoglobin status and predictors of anaemia among pregnant women in Mpigi, Uganda

Characteristic Frequency Percent (%) Mean (sd) of Hb 95% CI P- value*
Overall haemoglobin 2436 100 11.5 (1.38) 11.6-11.7  
 Age in years      
 Below 20 474 19.5 11.3 (1.33) 11.2-11.4 0.006
 20-24 937 38.5 11.5 (1.40) 11.4-11.6
 25-29 680 27.9 11.6 (1.36) 11.5-11.7
 30-34 176 7.2 11.5 (1.52) 11.3-11.8
 ≥35 169 6.9 11.5 (1.34) 11.3-11.7
Marital status      
 Single 295 12.1 11.4 (1.44) 11.2-11.5 0.055
 Married 2141 87.9 11.5 (1.37) 11.5-11.6
Education level      
 No formal 77 3.2 11.8 (1.46) 11.5-12.1 0.437
 Lower Primary (P1-4) 169 6.9 11.4 (1.38) 11.2-11.6
 Upper Primary (P5-7) 967 39.7 11.5 (1.37) 11.4-11.6
 Secondary (S1-S6) 1158 47.5 11.5 (1.40) 11.4-11.6
 Tertiary 65 2.7 11.5 (1.27) 11.1-11.8
Parity      
 Nulliparous 641 26.3 11.4 (1.37) 11.3-11.5 0.083
 1 582 24.0 11.5 (1.40) 11.4-11.6
 2 414 17.0 11.6 (1.33) 11.5-11.7
 3 286 11.7 11.6 (1.39) 11.5-11.8
 4 228 9.4 11.5 (1.36) 11.5-11.6
 Para 5+ 285 11.7 11.6 (1.43) 11.4-11.7
Timing of 1st visit      
 First trimester 251 10.3 11.3 (1.35) 11.1-11.5 0.034
 Second trimester 1505 61.8 11.5 (1.38) 11.5-11.6
 Third trimester 680 27.9 11.5 (1.40) 11.4-11.6
Iron supplements (number of tablets)      
 None 830 34.1 11.3 (1.38) 11.2-11.4 <0.001
 1-30 1157 47.4 11.6 (1.37) 11.5-11.7
 31-60 302 12.5 11.6 (1.34) 11.5-11.9
 61+ 147 6.0 11.8 (1.44) 11.5-11.9
Doses of anti-helminthics taken      
 Zero 511 21.0 11.4 (1.39) 11.3-11.6 0.15
 One 1162 47.7 11.5 (1.37) 11.4-11.6
 Two 763 31.3 11.6 (1.38) 11.5-11.7
Doses of antimalarial prophylaxis (IPT)      
 Zero 433 17.8 11.4 (1.44) 11.3-11.6 0.004
 One 1074 44.1 11.4 (1.36) 11.4-11.5
 Two 929 38.1 11.6 (1.37) 11.5-11.7
Episodes of malaria      
 None 1501 61.6 11.6 (1.35) 11.5-11.7 0.024
 One 568 23.3 11.4 (1.44) 11.3-11.7
 Two 239 9.8 11.3 (1.40) 11.1-11.6
 Three 91 3.7 11.6 (1.36) 11.3-12.0
 Four + 37 1.5 11.3 (1.59) 10.9-11.9
HIV sero-status      
 Negative 2237 91.8 11.6 (1.36) 11.5-11.6 <0.001
 Positive on ARVs 167 6.9 11.0 (1.52) 10.8-11.2
 Positive ARV naive 23 0.9 11.0 (1.38) 10.4-11.5
 Unknown 9 0.4 11.1 (1.28) 10.2-12.0  
  1. Hb: Haemoglobin, IPT: Intermittent prophylactic treatment, ARVs: antiretroviral drugs. *p-values are from the F-test at univariate analysis.