Appendix Table 6d.

Observed prevalences of low academic achievement in different exposure-combination groups

Low academic achievement
SDP status		Prevalences and number of individuals
First pregnancy	Second pregnancy	First pregnancy	Second pregnancy	N
Any value	Any value	7.80%	9.30%	453,806
0	Any value	5.73%	6.87%	341,492
1	Any value	14.08%	16.66%	112,314
Any value	0	5.76%	6.93%	356,552
Any value	1	15.26%	17.97%	97,254
0	0	5.44%	6.51%	327,628
1	0	9.38%	11.68%	28,924
0	1	12.58%	15.41%	13,864
1	1	15.71%	18.39%	83,390