Table 4

OR (95% CI) of BW discrepancy >100 g between BW from the CSHRR and the MBR stratified by maternal and offspring characteristics for the birth years 1979–1991

 OR of BW difference >100 g
Bivariate modelMultivariable model
NOR95% CINOR95% CI
Maternal age
 <20 years11871.220.911.631 1851.641.212.20
 20 ≤years <3019 183Reference19 114Reference
 30 ≤years <4010 7721.211.081.3710 7360.920.811.04
 40 ≤years <505821.741.222.475790.920.631.34
 ≥50 years3
Civil status
 Married16 533Reference16 469Reference
 Divorced19700.790.621.011 9650.760.590.97
 Not married13 2240.570.510.6513 1800.780.680.89
Parity
 117 219Reference17 154Reference
 210 1011.851.622.1110 0731.841.602.12
 329762.622.203.112 9632.602.153.14
 48923.052.333.988902.922.193.88
 53324.643.246.643294.443.056.47
 ≥62075.973.968.982055.733.738.82
Offspring characteristics*
 Sex
 Boy16 322Reference16 257Reference
 Girl15 4051.080.971.2115 3571.080.961.21
Year of birth
 1979–816607Reference6 598Reference
 1982–8462480.870.731.036 2280.900.751.07
 1985–8775910.770.650.927 5660.800.670.95
 1988–9111 2810.840.730.9811 2220.890.761.04
Age at BW recall (years)
 5–629841.551.281.882 9841.371.131.67
 6–6.596621.00.861.169 6600.970.831.13
 6.5–710 410Reference10 410Reference
 7–872451.181.011.387 2451.211.031.42
 >813161.811.412.331 3151.681.302.16
BMI category at BW recall
 Underweight2 3841.00.801.242 3840.960.771.19
 Normal weight25 186Reference25 185Reference
 Overweight3 1040.980.811.193 1030.770.471.25
 Obese5420.800.491.315411.080.681.74
 Morbidly obese4011.230.771.964010.960.771.19
  • *Information obtained from the CSHRR. BW, birth weight; CSHRR, Copenhagen School Health Records Register; MBR, Medical Birth Register.