Background
Methods
Sample
Instruments
Family socioeconomic status
| Uses the economic classification criteria of the Associação Brasileira de Empresas de Pesquisa (ABEP). It estimates consumer capacity on the basis of indicators such as color television set, bathroom, automobile, monthly-paid maid, duplex refrigerator or freezer, and head of family’s schooling. Strata A, B and C correspond to the upper- and middle-income classes, and D and E to the lower-income classes. |
Adopted child
| Yes or not. |
Number of siblings living in the same household
| Yes (3 or more) or not. |
Child witnessed physical and verbal violence between the parents/guardians
| Gauged by the Conflict Tactics Scales (CTS-PC) developed by Straus [29] and adapted to Portuguese by Hasselmann & Reichenheim [30]. It analyzes the following tactics used at moments of interparental conflict in the prior year: a) verbal aggression between the parents, assessed by acts such as swearing or insulting, sulking, crying, doing things to spite, smashed, hit or kicked things; b) physical violence, as in throwing something at the other person, pushing, slapping or spanking; and c) severe physical violence, identified as punching, kicking, hitting or trying to hit with objects, beating, and threatening to use or actually using a knife or gun. One affirmative item in each of the sub-scales means witnessing interparental violence. |
Minor maternal psychiatric disorder
| Evaluated by the Self-Reported Questionnaire (SRQ20) [31], which measures for the existence of psychic suffering, such as symptoms of depression, anxiety and psychosomatic conditions including headaches, insomnia and so on. Validated in Brazil by Mari & Williams [32], the scale consists of 20 dichotomous questions, with 7 or more items present indicating psychic suffering. |
Data analysis
Results
Profile of child and mother | Levels | Prev. (CI95%) | OR (CI95%) |
---|---|---|---|
Sex | Male (N = 188) | 15.4 (10.7 - 21.8) | 1.48 (0.79 - 2.74) |
Female (N = 182) | 11.0 (6.8 - 17.3) | 1.00 | |
Mother’s schooling | ≤7 years of education (N = 250) | 16.0 (11.2 - 22.4) |
2.64
c
(1.43 - 4.88)
|
>7 years of education (N = 119) | 6.7 (3.9 - 11.4) | 1.00 | |
Mother restless/hyperactive in childhood | Yes (N = 154) | 16.9 (11.3 - 24.6) | 1.60 (0.87 - 2.95) |
No (N = 177) | 11.3 (7.2 - 17.3) | 1.00 | |
Age | - | - | 1.35a (0.98 - 1.86)* |
IQ | - | - |
0.98
c
(0.96 - 0.99)*
|
Present family environment
| |||
Family functioning | Precarious (N = 52) | 30.8 (19.4 - 45.0) |
3.63
d
(1.95 - 6.78)
|
Fair / good (N = 285) | 10.9 (7.5 - 15.6) |
1.00
| |
Social support | No (N = 82) | 23.1 (13.2 - 37.3) |
2.56
b
(1.21 - 5.43)
|
Yes (N = 286) | 10.5 (7.3 - 14.9) |
1.00
| |
Mother got drunk | Yes (N = 41) | 24.5 (14.4 - 38.5) |
2.39
b
(1.13 - 5.08)
|
No (N = 327) | 11.9 (8.2 - 17.1) | 1.00 | |
Life events (prior 12 months) | - | - |
1.30
d
(1.14 - 1.48)*
|
Adversity indicator | - | - |
1.55
c
(1.22 - 1.97)*
|
Mother’s situation during pregnancy and childbirth
| |||
Pregnancy
| |||
Discord | Yes (N = 148) | 23.6 (15.9 - 33.6) |
4.54
d
(2.16 - 9.57)
|
No (N = 220) | 6.4 (3.7 - 10.7) |
1.00
| |
Alcohol use | Yes (N = 56) | 21.4 (11.8 - 35.6) |
2.03
b
(1.13 - 3.65)
|
No (N = 313) | 11.8 (8.8 - 15.7) | 1.00 | |
Tobacco use | Yes (N = 74) | 17.5 (10.3 - 28.2) | 1.52 (0.82 - 2.84) |
No (N = 295) | 12.2 (8.8 - 16.8) | 1.00 | |
Other drug use | Yes (N = 10) | 20.0 (5.1 - 54.0) | 1.69 (0.37 - 7.75) |
No (N = 357) | 12.9 (9.4 - 17.4) | 1.00 | |
Child had some health problem at birth | Yes (N = 34) | 17.8 (6.0 - 42.6) | 0.67 (0.17 - 2.65) |
No (N = 332) | 12.6 (8.8 - 17.9) | 1.00 |
Factors | Levels | OR | CI95% |
---|---|---|---|
Family functioning | Precarious |
2.14
|
1.11 - 4.13
|
Social support | No |
2.35
|
1.10 - 5.02
|
Life events, prior 12 months | - |
1.22*
|
1.04 - 1.43
|
Pregnancy | Discord and fights |
3.77
|
1.82 - 7.84
|
Profile of child and mother | Levels | Prev. (CI95%) | OR (CI95%) |
---|---|---|---|
Sex | Male (N = 188) | 14.4 (9.0 - 22.3) |
4.22
b
(1.58 - 11.27)
|
Female (N = 182) | 3.8 (1.7 - 8.3) | 1.00 | |
Mother’s schooling | Fundamental incomplete (N = 250) | 10.8 (6.9 - 16.5) | 2.28a (0.88 - 5.89) |
Fundamental complete and higher (N = 119) | 5.1 (2.2 - 11.2) | 1.00 | |
Mother restless / hyperactive in childhood | Yes (N = 154) | 9.8 (5.2 - 17.6) | 1.64 (0.66 - 4.06) |
No (N = 177) | 6.2 (3.1 - 12.0) | ||
Age | - | - |
1.43
b
(1.13 - 1.82)*
|
IQ | - | - |
0.95
b
(0.92 - 0.98)*
|
Present family environment
| |||
Family functioning | Precarious (N = 52) | 11.5 (5.7 - 21.9) | 1.26 (0.48 - 3.24) |
Fair / good (N = 285) | 9.5 (5.9 - 14.9) | 1.00 | |
Social support | No (N = 82) | 9.8 (4.4 - 20.1) | 1.08 (0.47 - 2.49) |
Yes (N = 286) | 9.1 (6.2 - 13.2) | 1.00 | |
Mother got drunk | Yes (N = 41) | 7.4 (2.4 - 20.5) | 0.76 (0.22 - 2.62) |
No (N = 327) | 9.5 (6.3 - 14.0) | 1.00 | |
Life events, prior 12 months | - | - | 0.90 (0.74 - 1.08)* |
Adversity indicator | - | - | 1.00 (0.71 - 1.41)* |
Mother’s situation during pregnancy and childbirth
| |||
Pregnancy
| |||
Discord | Yes (N = 148) | 8.8 (5.0 - 15.1) | 0.92 (0.40 - 2.09) |
No (N = 220) | 9.5 (5.6 - 15.7) | 1.00 | |
Alcohol use | Yes (N = 56) | 8.9 (4.0 - 18.7) | 0.96 (0.37 - 2.50) |
No (N = 313) | 9.3 (6.0 - 14.0) | 1.00 | |
Tobacco use | Yes (N = 74) | 9.5 (4.4 - 19.3) | 1.04 (0.37 - 2.95) |
No (N = 295) | 9.2 (5.7 - 14.5) | 1.00 | |
Other drug use | Yes (N = 10) | - | - |
No (N = 357) | 9.5 (6.4 - 13.9) | ||
Child had some health problem at birth | Yes (N = 34) | 11.8 (4.7 - 26.7) | 0.74 (0.23 - 2.36) |
No (N = 332) | 9.0 (5.8 - 13.8) | 1.00 |
Factors | Levels | OR | CI95% |
---|---|---|---|
Sex | Male |
4.31
|
1.62 - 11.50
|
IQ | - |
0.95*
|
0.92 - 0.98
|