Table 2 Predictors of maternal health problems, Odds ratios (ORs) and 95% confidence intervals in brackets

Child disability, no disability (ref.)

Mild disability

1.658^***

1.298^***

1.468^***

1.170

1.398^***

1.198

2.679^***

1.970^***

1.713^***

1.312

[1.483,1.853]

[1.157,1.455]

[1.240,1.737]

[0.986,1.388]

[1.166,1.677]

[0.997,1.438]

[1.909,3.759]

[1.402,2.768]

[1.303,2.252]

[0.992,1.736]

Complex disability

1.653^***

1.187^***

1.599^***

1.252^***

1.468^***

1.307^***

2.105^***

1.273

1.807^***

1.179

[1.534,1.782]

[1.099,1.282]

[1.434,1.782]

[1.121,1.398]

[1.303,1.654]

[1.156,1.477]

[1.629,2.719]

[0.984,1.648]

[1.511,2.161]

[0.977,1.423]

Have had diagnosis prior to birth: no (ref.)

Yes, at least one

3.180^***

3.278^***

2.629^***

2.439^***

2.941^***

[3.111,3.250]

[3.181,3.378]

[2.545,2.716]

[2.234,2.664]

[2.783,3.107]

Year of education, mother

0.962^***

0.990^***

0.968^***

0.966^***

0.991^**

[0.959,0.964]

[0.986,0.993]

[0.964,0.972]

[0.956,0.975]

[0.985,0.998]

Household income lowest quintile (ref.)

Second

1.255^***

1.006

1.034

0.992

1.193^***

[1.216,1.295]

[0.966,1.047]

[0.990,1.080]

[0.882,1.116]

[1.100,1.294]

Third

1.261^***

0.877^***

0.975

0.996

1.236^***

[1.222,1.302]

[0.841,0.915]

[0.932,1.020]

[0.885,1.121]

[1.139,1.342]

Fourth

1.192^***

0.759^***

0.901^***

0.891

1.315^***

[1.153,1.232]

[0.725,0.793]

[0.859,0.945]

[0.788,1.007]

[1.210,1.429]

Highest

1.038^*

0.617^***

0.802^***

0.678^***

1.261^***

[1.003,1.075]

[0.588,0.649]

[0.762,0.845]

[0.594,0.773]

[1.156,1.377]

Number of children, Single child (ref.)

Two children

0.879^***

0.712^***

0.924^***

0.698^***

0.882^***

[0.857,0.901]

[0.689,0.737]

[0.889,0.959]

[0.639,0.763]

[0.827,0.940]

Three or more children

0.820^***

0.631^***

0.840^***

0.537^***

0.804^***

[0.798,0.843]

[0.607,0.655]

[0.806,0.876]

[0.484,0.595]

[0.749,0.863]

Employment status, non-employed (ref.)

Employed

0.824^***

0.651^***

0.590^***

0.733^***

0.792^***

[0.805,0.844]

[0.630,0.672]

[0.570,0.610]

[0.671,0.802]

[0.746,0.841]

Marital status, Married/partner (ref.)

Divorced/Separated

1.119^***

1.664^***

1.056

1.098

1.115

[1.073,1.167]

[1.577,1.755]

[0.982,1.136]

[0.947,1.274]

[0.999,1.245]

Region of birth, Norway (ref.)

Europe, North America, Australia

0.758^***

0.677^***

0.548^***

0.677^***

0.657^***

[0.731,0.785]

[0.643,0.713]

[0.517,0.582]

[0.592,0.775]

[0.598,0.723]

Africa, Asia, Latin America

0.770^***

0.519^***

0.357^***

0.544^***

0.634^***

[0.748,0.793]

[0.496,0.544]

[0.337,0.378]

[0.481,0.616]

[0.584,0.689]

Age at birth

0.968^***

0.901^***

1.021

0.911^***

0.948^*

[0.954,0.983]

[0.883,0.921]

[0.997,1.046]

[0.865,0.959]

[0.911,0.988]

Age at birth squared

1.001^***

1.002^***

1.000^*

1.002^***

1.000

[1.001,1.001]

[1.001,1.002]

[0.999,1.000]

[1.001,1.003]

[1.000,1.001]

Child age

1.152^***

1.099^***

0.990

1.425^***

1.149^***

[1.138,1.165]

[1.082,1.117]

[0.974,1.007]

[1.356,1.498]

[1.116,1.183]

Child sex, boys (ref.)

0.998^***

0.996^***

1.001

0.986^***

1.000

[0.996,0.999]

[0.995,0.998]

[0.999,1.003]

[0.981,0.990]

[0.997,1.003]

Girls

1.003

0.938^***

0.965^*

0.968

0.999

[0.985,1.021]

[0.914,0.963]

[0.939,0.992]

[0.903,1.038]

[0.955,1.045]

n (person-years)

1,594,900

1,490,196

1,594,900

1,490,196

1,594,900

1,490,196

1,594,900

1,490,196

1,594,900

1,490,196

AIC

453670.3

414069.0

250249.4

229657.8

228989.0

212674.4

46785.0

43345.6

97838.5

91294.8

BIC

453707.1

414349.9

250286.3

229938.7

229025.8

212955.3

46821.9

43626.5

97875.3

91575.8