Table 4.

RRa of the mother’s receiving a diagnosis of categories of kidney disease according to pregnancy-related variables: Childbirths 1967 to 1998 and kidney biopsies April 1988 to 2002, Norway

MPGNOther Immune Complex GNFSGS or MCDOther Pathological FindingsNormal Findings or Unrepresentative Biopsy
nRRaPnRRaPnRRaPnRRaPnRRaP
Offspring birth weight
    < 1.5 kg41.9 (0.69 to 5.0)0.00288.6 (4.1 to 18)<0.00159.6 (3.7 to 24)<0.00194.3 (2.2 to 8.4)<0.00154.9 (2.0 to 12)0.002
    1.5 to 2.49 kg182.5 (1.5 to 4.1)41.3 (0.49 to 3.7)31.9 (0.57 to 6.1)121.8 (0.98 to 3.2)72.2 (0.99 to 4.7)
    2.5 to 4.49 kg1621.0701.0381.01561.0751.0
    ≥4.5 kg30.87 (0.28 to 2.7)10.68 (0.09 to 4.9)20.43 (0.06 to 9.6)20.62 (0.15 to 2.5)31.9 (0.60 to 6.1)
Offspring gestational age
    <32 wk31.2 (0.40 to 3.9)0.197.7 (3.8 to 15)<0.00134.8 (1.5 to 16)0.0262.5 (1.1 to 5.7)0.00321.7 (0.42 to 7.0)0.07
    32 to 36 wk182.2 (1.3 to 3.5)40.99 (0.36 to 2.7)20.94 (0.23 to 3.9)141.7 (0.99 to 3.0)82.0 (0.96 to 4.2)
    37 to 41 wk1311.0631.0331.01301.0631.0
    ≥42 wk291.0 (0.68 to 1.5)60.43 (0.19 to 0.99)41.8 (0.20 to 1.6)220.78 (0.49 to 1.2)110.8 (0.42 to 1.5)
Offspring small for gestational age (versus not small)221.4 (0.88 to 2.2)0.2121.7 (0.93 to 3.2)0.0830.72 (0.22 to 2.3)0.6261.7 (1.1 to 2.6)0.01121.5 (0.84 to 2.8)0.2
Stillbirth versus live birth42.1 (0.78 to 5.5)0.144.6 (1.7 to 13)0.00312.1 (0.30 to 15)0.531.4 (0.45 to 4.4)0.621.9 (0.48 to 7.9)0.4
Maternal disease(versus absence of diseaseb)
    gestational hypertension61.8 (0.81 to 4.1)0.221.4 (0.34 to 5.7)0.7041.2 (0.46 to 3.3)0.763.8 (1.7 to 8.7)0.002
    preeclampsia213.2 (2.1 to 5.1)<0.001114.0 (2.1 to 7.6)<0.00195.6 (2.7 to 12)<0.001132.1 (1.2 to 3.6)0.01123.8 (2.2 to 7.3)<0.001
    diabetes before pregnancy12.3 (0.35 to 16)0.4527 (11 to 67)<0.001024.8 (1.2 to 19)0.030
    kidney disease before pregnancy717 (8.0 to 36)<0.001528 (11 to 69)<0.001654 (23 to 129)<0.001616 (6.9 to 35)<0.001210 (2.5 to 41)0.001
    rheumatic disease before pregnancy48.1 (3.0 to 22)<0.001738 (17 to 85)<0.00117.1 (1.0 to 49)0.05717 (8.0 to 37)<0.001418 (6.6 to 50)<0.001
  • a Adjusted for age at childbirth and year of childbirth.

  • b Those with the risk factor were compared with those without the risk factor, for example hypertensive versus nonhypertensive.