Table 1.
Variable List and Coding: NCDS, 1958-2000
| Variables | Coding |
|---|---|
| Maternal Health Behaviors and Child Health | |
| Low birthweight | 1=yes |
| Mother smoked heavily after month four | 1=yes |
| Mother smoked “medium/variable” amount | 1=yes |
| Breastfed as infant | 1=yes |
| Health Problem at Age 7 | Reference: No health problems during childhood |
| Health Problem at Age 11 | Reference: No health problems during childhood |
| Health Problem at Ages 11 and 7 | Reference: No health problems during childhood |
| Health Problem at Age 16 | Reference: No health problems during childhood |
| Health Problem at Ages 16 and 11 | Reference: No health problems during childhood |
| Health Problem at All Ages | Reference: No health problems during childhood |
| Missing full childhood health information | Reference: No health problems during childhood |
| Child Characteristics | |
| Sex | 0=female 1=male |
| Region in 1958, 1965, 1969, 1974 | 0=England 1=Wales 2=Scotland |
| Average class of father during childhood | 1=professional 2=intermediate 3=skilled non-manual |
| 4=skilled manual 5=partly skilled 6=unskilled manual | |
| Mother's marital status in 1958 | 0=unmarried 1=married |
| Maternal grandfather's social class in 1958 | 1=professional 2=intermediate 3=skilled non-manual |
| 4=skilled manual 5=partly skilled 6=unskilled manual | |
| Age mother/father finished school | 1=<13 2=13-14 3=14-15 4=15-16 5=16-17 6=17-18 |
| 7=18-19 8=19-21 9=21-23 10=23+ | |
| Childhood avg. number of kids in household | 0=1 1=2 2=3 3=4+ |
| Childhood avg. access to basic resources | 1=sole use 3 2=sole use 2 3=sole use 1 4=none |
| Family income in 1974 | monthly income in pounds |
| Childhood avg.: mom's paid work status | 0=no 1=yes |
| Childhood avg. number of moves | 0 through 22 |
| School Type at Age 16 | 0=secondary 1=grammar/tech |
| 2=comprehensive 3=special needs | |
| Parents expectations about school continuation | 0=leave at minimum 1=stay past minimum |
| Child's expectations after mandatory school completion | 0=get a job 1=continue schooling |
| Math and reading achievement scores | 0-40, 0-35 |
| Number of O-Levels Passed by 1974 , A-Levels Taken by 1976 | 0-9+, 0-6 |
| Adult Characteristics | |
| NVQ Level at 23, 33, 42 | Levels 1-5 |
| Currently smokes at 23, 33 | 0=no 1=yes |