Table 2.

Results of Regression Models of Birth Weight (g) and 95% CI for 434 Infants Who Survived the Neonatal Period in Butare, Rwanda, 1989–1994

UnadjustedAdjusted for Gestational AgeFull Model§
Coefficient95% CICoefficient95% CICoefficient95% CI
LowerUpperLowerUpperLowerUpper
Infant
HIV status
 Mother positive
  Infant infected (group 1) −235 −376−94−187 −312−62−154 −271−38
  Infant uninfected (group 2)000
 Mother negative38−4512125−4998−1−7370
Gestational age (wk)
 <38−647 −800−493−609 −751−468
 38–39−285 −369−200−243 −322−165
 4000
 >40146 50243106* 16196
Maternal factors
Age (y)
 15–19−229 −394−64−146−2930−23−162115
 20–24000
 25–2921−6710829−49106−64−15122
 ≥3078−5020575−37187−47−18592
Parity
 0−162 −255−68−159 −241−77−154 −239−69
 1–2000
 ≥347−4814229−5511339−58137
Cigarettes/d
 00000
 ≥1−38−177101−9−131114−32−14682
Family Income (monthly FRw)
 0–499−33−12559−23−103588−6884
 500–2499000
 ≥2500100020085−417351−32135
MUAC (cm)
 <22−160 −255−66−128 −212−44−80−1612
 22–23000
 ≥24149 59239129 49209109 31187
Height (per cm increase)15 92212 7189 314
Hematocrit (per unit increase)16 92314 82012 618
  • * P ≤ .05;

  • P ≤ .01;

  • P ≤ .001.

  • § Model including gestational age, infant's HIV status, maternal age, parity, income, cigarette-smoking, height, hematocrit, and MUAC.

  • Unadjusted difference between groups 1 and 2 is 233 g in Table 1 because means are based on 513 infants.