Table 2

Behavioural morbidity (CBCL T-score≥60) at each follow-up by total sample and smoking status

Nn (%) within total samplen (%) within never smokedn (%) within 1–10 cigarettes daily pre-pregnancy*n (%) within 11+ cigarettes daily pre-pregnancy*n (%) within smoked before and during pregnancy
CBCL Year 2 Morbidity1952
 Total225 (11.5)86 (4.4)31 (1.6)36 (1.9)72 (3.7)
 Internalising167 (8.6)66 (3.4)16 (0.8)25 (1.3)59 (3.1)
 Externalising259 (13.3)94 (4.9)42 (2.2)38 (2.0)84 (4.3)
CBCL year 5 morbidity2127
 Total452 (21.3)172 (8.2)63 (3.0)62 (2.9)152 (7.2)
 Internalising383 (18.0)158 (7.5)54 (2.6)56 (2.7)115 (5.5)
 Externalising432 (20.3)155 (7.3)62 (2.9)62 (2.9)150 (7.1)
CBCL year 8 morbidity2037
 Total392 (19.2)135 (6.7)63 (3.1)52 (2.6)139 (6.9)
 Internalising394 (19.3)135 (6.7)74 (3.7)57 (2.8)126 (6.2)
 Externalising368 (18.10136 (6.7)52 (2.6)50 (2.5)128 (6.3)
CBCL year 10 morbidity1977
 Total298 (15.1)112 (5.7)40 (2.0)46 (2.3)98 (5.0)
 Internalising349 (17.7)137 (7.0)55 (2.8)53 (2.7)102 (5.2)
 Externalising249 (12.6)92 (4.7)31 (1.6)42 (2.1)82 (4.2)
CBCL year 14 morbidity1744
 Total245 (14.0)83 (4.8)35 (2.0)39 (2.3)86 (5.0)
 Internalising220 (12.6)83 (4.8)37 (2.1)32 (1.8)65 (3.8)
 Externalising271 (15.5)89 (5.1)42 (2.4)49 (2.8)90 (5.2)
  • Valid row percentages presented.

  • * No longer smoking by 18 weeks gestation.

  • CBCL, Child Behaviour Checklist.