Worldwide, the load of mental upsets is immense and at least comparable to the load caused by many terrible physical diseases [ 1 ] . In the WHO Global Burden of Disease undertaking it was estimated that 50 % of all Disability Adjusted Life Years ( DALY 's ) in the 15-44 old ages old are due to psychiatry-related conditions [ 2 ] . Recently, depressive upsets were projected to rank 2nd on a list of 15 major diseases in footings of load of disease in 2030 [ 3 ] .

In malice of the many available effectual interventions, they have limited possible to cut down the entire load of mental unwellness [ 4 ] . It has been estimated that the maximal decrease of the entire load of mental disease that can be achieved by intervention in optimum scenes is merely 40 % [ 5 ] . Therefore, bar of mental upsets is indispensable. An extra statement for beef uping the function of preventative psychopathology in public wellness is the fact that at the population degree, a significant portion of the costs are caused by new instances. The new instances account for 39.2 % of the costs at the population degree [ 6 ] .

Unfortunately, there are soon few possibilities for the primary or selective bar of mental disease in the non-referred population. Because grownup mental diseases have their beginnings early in life [ 7 ] , primary bar can be most effectual if started early in childhood, or even before. Indeed, bar of psychosocial jobs may get down before birth.

1.4 Gevolgen new wave psychopathologie tijdens de zwangerschap

There is strong grounds that, in line with Barker 's `` foetal beginnings of grownup disease '' hypothesis [ a ] , an inauspicious mental province of a female parent during gestation is an of import and modifiable hazard factor for psychosocial jobs in her kids. The nexus between prenatal maternal negative emotions and behavioural and emotional ( 'psychosocial ' ) jobs in the progeny has been demonstrated in legion carnal surveies and, more late, in worlds. Two recent reappraisals summarize the consequences of this research [ 8 ] [ 9 ] . Numerous surveies evidenced that there is a positive association between prenatal anxiousness or depression in the female parent, and cognitive, behavioural and emotional jobs in the kid. For illustration, in a big survey ( N=7448 ) prenatal anxiousness of the female parent was related to behavioural or emotional jobs of 4-year-old kids, independent of the female parent 's postpartum depression or anxiousness [ 10 ] . Anxiety in gestation has been related to delayed mental and motor development, independent of the female parent 's postpartum emphasis and depression degrees [ 11 ] . The inauspicious effects seem to be permanent: higher anxiousness degrees of the female parents early in gestation were related to an addition in ADHD and other projecting jobs in their 8-9 twelvemonth old kids [ 12 ] . An addition in criminalism in the male progeny of female parents who suffered antenatal depression was observed by Maki et al [ 13 ] . Davis and colleagues demonstrated that maternal antenatal anxiousness and depression were associated with an unfavorable disposition, i.e. infant negative responsiveness which in bend is related to behavioural suppression and societal anxiousness [ 14 ] . Chung et Al found that depression in gestation is associated with growing deceleration, premature birth and more extradural analgesia during bringing. Children of these adult females are more likely to be admitted on a NICU [ 15 ] .

Although the mechanisms have non been to the full elucidated, the emphasis endocrine hydrocortisone, which besides seems to play a function in grownup abnormal psychology, has been proposed as the primary biological go-between [ 9 ] . Elevated maternal hydrocortisone degrees might take to cut down development of the kid. LeWinn and others found that higher maternal hydrocortisone degrees during gestation are associated with decreased childhood IQ [ 16 ] .

Other mechanisms such as intoxicant and nicotine ingestion in gestation [ 17 ] [ 18 ] [ 19 ] and the effects of the postpartum mental status of the female parent ( e.g. with effects for suckling [ 20 ] [ 21 ] ) may be runing every bit good [ 22 ] .

Whatever the existent mechanisms involved are, there is soon convincing grounds that kids whose female parents suffered from anxiousness or depression during gestation constitute a high hazard group for behavioural and emotional jobs. Early designation and intervention, and sooner even bar of the maternal mental wellness jobs would assist to forestall the same type of jobs in the progeny.

1.5 Antenatale depressie

Until pubescence, rates of depression are approximately equal in male childs and misss, but from adolescence on, misss suffer about twice every bit frequently of depression than male childs, a rate which remains changeless until climacteric, after which it bit by bit declines [ 23 ] [ 24 ] . During gestation around 10-20 % of all adult females are enduring from depression or anxiousness, a prevalence that is basically similar to the prevalence outside gestation [ 25 ] [ 26 ] [ 27 ] [ 28 ] [ 29 ] [ 30 ] [ 31 ] [ 32 ] .

Known hazard factors for prenatal depression are immature maternal age [ 26 ] , being multipara with a history of obstetric complication [ 33 ] , cohabitating [ 34 ] , low societal support [ 35 ] [ 36 ] , major life events [ 37 ] , low income [ 38 ] and a history of physical and/or sexual maltreatment [ 37 ] [ 40 ] [ 41 ] .

Niet gebruikte refnrs: [ 39 ] [ 43 ] [ 45 ]

1.6 Antenatale angststoornis

Although there is a batch more known about depression during gestation, anxiousness upsets are the most common psychiatric upsets in grownups. Anxiety upsets have a 12-month prevalence estimated at 18 % , and are more frequently seen in adult females [ 42 ] . A recent reappraisal found that anxiousness upsets are common during the perinatal period, with rates of generalised anxiousness upset being higher during the perinatal period ( 8,5 % in the 3rd trimester ) than in the general population [ 44 ] .

Because depression and anxiousness often co-occur [ 46 ] , it is likely that adult females who report depressive symptoms during gestation besides experience symptoms of anxiousness. Furthermore, anxiousness upsets are common in the absence of depression, peculiarly in adult females [ 47 ] , and the average age of oncoming of many anxiousness upsets is at a child-bearing age [ 48 ] . Harmonizing to Moss et Al, hazard factors for anxiousness may be similar to those of depression in pregnant adult females but this requires farther research [ 49 ] .

1.7 Socio-economische positie

The socio-economic place ( SEP ) is traditionally defined as `` the comparative place of a household or person on a hierarchal societal construction, based on their entree to or command over wealth, prestigiousness and power '' [ 50 ] . Different mensurable facets of SEP are normally used in research, such as educational degree, occupational position and income. Educational degree represents cognition, accomplishments, attitudes and values that can act upon health-related behaviour. Occupational position is an index of working conditions, power and wellness. Income is associated with material wellbeing and ability to devour goods and services, required for a healthy life [ 51 ] [ 52 ] . These different facets of SEP are known to be positively correlated [ 53 ] .

A low SEP seems to be a hazard factor for anxiousness symptoms after gestation [ 54 ] , although other surveies found no important association between composite SEP and depressive symptoms during gestation [ 55 ] [ 56 ] [ 57 ] [ 58 ] [ 59 ] . In contrast, in a recent reappraisal, Lancaster et Al. presented that both a lower educational degree as a low income have a little association with depression during gestation, but non important in their multivariate analyses [ B ] . Unemployment was non even significantly associated with depression during gestation in bivariate analysis [ B ] .

1.8 Life events

Harmonizing to Grant et Al and Evans, the chronic psychological emphasis ensuing from a low SEP may be associated with a high exposure to life stressors [ hundred ] [ vitamin D ] .

What is known about the association of major negative life events and anxiety/depression during gestation?

1.9 Doel new wave dot onderzoek

Hypothesis Low socio-economic place is associated with anxiousness and depression during gestation and this association is modified by major negative life events.

Hoofdstuk 2. Methoden

2.1 Studiedesign

The P5D-study. The Prediction of anxiousness and Depression during Pregnancy and the Postnatal Period ; the function of Personality ( P5D ) -study is an experimental longitudinal survey in the Dutch primary obstetric attention. The survey aims to develop a hazard mark based on established hazard factors and personality traits, to foretell ante- and postpartum anxiousness and depression at the first consult at the accoucheuses pattern. The P5D-study was approved by the Medical Ethical Committee ( Dutch: Medisch-Ethische Toetsingscommissie ( METc ) ) of the University Medical Center Groningen, the Netherlands.

2.2 Studiepopulatie en dataverzameling

Data was collected at multiple assessment minutes: ( 1 ) at baseline: at the first or 2nd consult at the obstetrics pattern ( largely at the terminal of the first trimester ) ; ( 2 ) at 24 hebdomads of gestation ; ( 3 ) at 36 hebdomads of gestation ; ( 4 ) 6 hebdomads postpartum ; ( 5 ) 6 months postpartum ; ( 6 ) 1 twelvemonth postpartum. The present survey involves informations from the baseline appraisal of the P5D-cohort, which ran from April 2010 to January 2011, although the inclusion still continues.

Sample choice concerned 35 obstetrics patterns in both rural and urban countries in the four Northern states of the Netherlands: Groningen, Friesland, Drenthe and Overijssel. All adult females subscribing up at these obstetrics patterns could come in the survey. The lone adult females who were excluded from engagement were adult females who had no command of the Dutch linguistic communication. The included adult females received an informational bundle about the survey. This bundle contained an information missive, an informed consent, the first questionnaires and a stamped self-addressed envelope. Midwifes handed the bundle to the adult female while explicating and stressing the relevancy of this survey. When adult females agreed to take part, they filled in the printed questionnaires, every bit good as the informed consent and their personal information ( e.g. name, reference, telephone figure and email reference ) at place and sent them to us in the stamped self-addressed envelope.

When we received the printed questionnaire, accompanied by the informed consent and the personal information of the participant, we used the supplied electronic mail reference to direct the username and watchword to entree the online questionnaires. Participants were instructed to reach us in instance they had no entree to the cyberspace at any clip during the survey. In response to these state of affairss ( n=3, 0.4 % ) , we sent the extra questionnaires in print to their postal reference, once more accompanied by a stamped self-addressed envelope.

2.3 Vragenlijsten

Questionnaires in print. The undermentioned questionnaires were handed in print at the obstetrics patterns:

General information, dwelling of the gestational age and the day of the month of make fulling in the questionnaire, which we used to cipher the maternal age and the gestational age at any minute ;

The Spielberger State Trait Anxiety Inventory ( STAI ) [ 60 ] to measure the degree of anxiousness. We used the six-item short-form, because the full signifier would be inappropriate in the position of high figure of questionnaires. Furthermore, the six-item short-form of the STAI produces tonss similar to those obtained utilizing the full-form [ 60 ] . The participant had to bespeak how they felt at the minute of appraisal, giving one of the four replies ( non at all ( 1 ) , slightly ( 2 ) , reasonably so ( 3 ) , really ( 4 ) ) . The six statements are: I feel unagitated, I feel nervous, I feel disquieted ( dying ) , I am relaxed, I feel satisfied, I am disquieted. The cut-off mark for an at least moderate degree of anxiousness is a‰?13 in this short-form [ 60 ] ;

The Edinburgh Postnatal Depression Scale ( EPDS ) [ 61 ] to measure the degree of depressive symptoms. Although the EPDS is developed to measure after gestation, the questionnaire is besides dependable to measure depressive symptoms during gestation [ 62 ] . The 10 points are: I am able to express joy and see the amusing side of things, I look frontward with enjoyment to things, I blame myself unnecessarily when things go incorrect, I am dying or worried for no good ground, I feel frightened or panicked for no really good ground, Thingss are acquiring on top of me, I am so unhappy that I have had trouble sleeping, I feel sad or suffering, I am so unhappy that I have been shouting, The idea of harming myself occurred to me. The cut-off mark for an at least moderate degree of depression is a‰?12 [ 61 ] ;

An adjusted Negative Life Events Questionnaire ( NLEQ ) [ 65 ] , to buttockss major negative life events. We make a differentiation between different periods in life: in the period until the age of 16 ; between the age of 16 and until 2 old ages before gestation ; in the 2 old ages before gestation. The mentioned life events are: divorce ( of a parent, self or kid ) , new relationship, traveling, long-run and/or terrible unwellness ( of a parent, sibling, spouse, ego, kid or another of import individual ( e.g. friend, in-laws, a confidential adviser ) ) , decease ( of a parent, sibling, spouse, kid or another of import individual ) , terrible psychiatric jobs ( of a parent, sibling, spouse, kid, self or another of import individual ) , suicide effort ( of a parent, sibling, spouse, kid, self or another of import individual ) , household force, intoxicant or drugs abuse within the household or the relationship, being victim of a offense, being victim of a terrible accident, being victim of sexual maltreatment, being victim of assault, holding an unwanted gestation ;

Online questionnaire. The undermentioned questionnaire was administered online:

Socio-economic place ( SEP, based on educational degree ( self and spouse ) , business ( self and spouse ) and one-year gross household income ) ) was assessed utilizing a questionnaire based on the Leidsche Rijn questionnaire ( Julius Center for Health Sciences and Primary Care, Utrecht ) [ 68 ] .

2.4 Statistische analyse

Although P5D contains all above-named questionnaires, merely the STAI ( anxiousness ) , EPDS ( depression ) , SEP ( socio-economic place ) and the adjusted NLEQ ( major negative life events ) questionnaires were necessary to prove our present hypotheses.

First, we calculated descriptive statistics for the STAI and EPDS tonss, every bit good as for the five indexs of SEP ( educational degree ( self and spouse ) , business ( self and spouse ) and one-year household income ) and major negative life events.

Second, we assessed the correlativity between the STAI and EPDS tonss, ...

We averaged the indexs of SEP after standardisation of educational degree ( both ego and spouse ) and one-year household income ( z-scores ) . The lowest 25 % , intermediate 50 % and highest 25 % of the tonss were considered to stand for severally low, intermediate and high SEP.

The degree of significance was set at 0.05, reversible. Datas were analyzed utilizing PASW statistics 18.

Hoofdstuk 3. Resultaten

The present survey involves informations from the baseline appraisal of the P5D-cohort, which ran from April 2010 to January 2011. A sum of 863 participants filled in a questionnaire, but 115 participants ( 13.3 % ) were excluded because they did non make full in the STAI short-form. Exclusion due to non-mastery of the Dutch linguistic communication was non registered.

Descriptive statistics

Anxiety. All of the 748 included participants ( 100 % ) filled in the STAI short-form. From these 748 participants, 108 ( 14.4 % ) scored above the cut-off value ( STAI a‰?13 ) . A histogram with the frequences of the STAI tonss is presented in figure 1. The average STAI mark was 9.96 ( SD = 2.68 ) .

Figure 1 Histogram with the frequences of the STAI tonss. The cut-off mark for an at least moderate degree of anxiousness is STAI a‰?13:

Depression. From the 748 included participants, 743 ( 99.5 % ) filled in the EPDS signifier. From these 743 participants, 31 ( 4.2 % ) scored above the cut-off value ( EPDS a‰?12 ) . A histogram with the frequences of the EPDS tonss is presented in figure 2. The average EPDS mark was 4.67 ( SD = 3.59 ) .

Figure 2 Histogram with the frequences of the EPDS tonss. Cut-off value for an at least moderate degree of depression is EPDS a‰?12:

Correlation between anxiousness and depression

The correlativity between anxiousness and depression tonss was strong: R = 0.72, P & lt ; 0.01 ( Pearson 's trial, two-tailed significance ) . A spread secret plan is presented in figure 3.

Figure 3 Scatter secret plan, stand foring the correlativity between the STAI and EPDS tonss:

Socio-economic place. From the 748 included participants, 342 ( 45.7 % ) filled in all questionnaires about SEP. The descriptive statistics of the assessed indexs of SEP are presented in table 1 ( educational degree ) , table 2 ( occupational position ) and table 3 ( household income ) .

Table 1 Descriptive statistics of educational degree:

Self

N ( % )

Spouse

N ( % )

Primary instruction ( basisschool, speciaal onderwijs )

0

8 ( 1.9 )

Low-level secondary instruction ( LBO-opleiding )

1 ( 0.2 )

16 ( 3.8 )

Middle-level secondary instruction ( bijv. MAVO, VBO )

17 ( 4.0 )

27 ( 6.4 )

Vocational preparation ( MBO-opleiding )

145 ( 33.9 )

182 ( 43.3 )

High-level secondary instruction ( HAVO, VWO, Gymnasium )

29 ( 6.8 )

20 ( 4.8 )

Professional instruction ( HBO-opleiding )

168 ( 39.3 )

122 ( 29.0 )

University ( WO-opleiding )

68 ( 15.9 )

45 ( 10.7 )

Entire

428

420

Table 2 Descriptive statistics of occupational position:

Self

N ( % )

Spouse

N ( % )

Yes

384 ( 89.5 )

412 ( 96.9 )

No

45 ( 10.5 )

13 ( 3.1 )

Entire

429

425

Table 3 Descriptive statistics of household income ( gross, in euro 's per twelvemonth ) :

N ( % )

0 - 14,999

14 ( 4.0 )

15,000 - 30,999

58 ( 16.4 )

31,000 - 59,999

207 ( 58.5 )

60,000 - 89,999

60 ( 19.9 )

90.000 or more

15 ( 4.2 )

Entire

354

Correlation between different facets of socio-economic place. The correlativities between the five mensural facets of SEP are presented in table 4.

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