Depression is one of the most common psychiatric health problems worldwide which causes great suffering among the affected individuals and causes heavy national economic losses. Few studies have examined the treatment effects of various treatment components in Internet cognitive behavioral therapy (ICBT) as well as the long term effects for depression. The treatment method as such has indicated large effects both immediately after treatment and in limited follow ups, up to one year. In the present study long time effects in ICBT and the various 4 treatment components support type, who is in charge of the content in treatment and supervision has been examined with a mixed factorial design within a group of adults suffering from depression (N=197). Further, the impact of acquired knowledge about treatment content on symptom reduction examined two years post treatment. Previous research has indicated divergent results in the interaction between acquired knowledge and treatment outcome. The results indicated moderate to large effects of treatment two years post treatment independent of treatment component (d =.51- 1.63). Persistent treatment effects were found in the majority of the outcome measures, measured immediately after treatment to the follow up two years post treatment. One advantage was found for the participants who received therapist with supervision on the outcome of sleeping difficulties in comparison with those who received a therapist without supervision (ղᵖ²=.076). One further advantage was found for acquired knowledge among participants who was assigned content in treatment chosen by the therapist and at the same time received support on demand in comparison with participants who got to choose treatment content by themselves and was received scheduled support. Also participants who got to choose treatment content by themselves and received scheduled support had an advantage in comparison with those who got to choose treatment content by themselves and received support on demand (ղᵖ²=.045; ղ ᵖ²=.039). Acquired knowledge did not indicate any correlations with depressive symptoms. The findings of the study indicate that ICBT is an effective treatment method among adults suffering from depression even in long term follow ups, and that the importance of specific treatment components need further research.

No description available.

Depression i samband med graviditet förekommer hos ungefär 10% av gravida och medför risker för den gravida och barnet. Många erhåller inte behandling. IKBT kan öka behandlingstillgängligheten och har visat sig effektivt jämfört med sedvanlig mödravård. Utvärderingens syfte var att undersöka skillnader i depressionssymtom före och efter fyra veckor i en IKBT-behandling mot antenatal depression och att jämföra skillnaderna med en tidigare RCT på en snarlik behandling. Huvudfrågeställningen var huruvida depressionssymtom minskar hos patienter med antenatal depression efter fyra veckor i en IKBT-behandling. 26 personer deltog i behandlingen. Förmätning jämfördes med senast kända mätningen efter fyra veckor. Dessa och de veckovisa mätningarna fram till vecka fyra, jämfördes med två icke-randomiserade kontrollgrupper. Skillnad mellan förmätning och senaste mätningen avseende grad av depressionssymtom var signifikant i genomfört t-test och symtomreduktionen tycks vara i nivå med resultat från den tidigare RCT-studien. IKBT skulle således kunna utgöra ett behandlingsalternativ för gravida med depression. Slutsatser bör dras med försiktighet. Framtida forskning inom fältet är av vikt för att validera resultat och för att ge underlag till utvecklingen av behandling vid antenatal depression. / Pregnancy related depression exists in approximately 10% of pregnant people and adds risks for the pregnant individual and the baby. Many are not treated. ICBT may increase the treatment availability and appears to be more effective than conventional maternal health care. The purpose of this evaluation was to examine differences in symptoms of depression before and after four weeks of ICBT-treatment for antenatal depression and to compare the differences with a prior RCT of a similar treatment. The main research question was whether symptom of depression decreases in patients with antenatal depression after four weeks when being treated with an ICBT-treatment. 26 persons participated in the treatment. Pre-measures was compared to the most recent measurement after four weeks. These, and the weekly done measurements up to week four, was compared with two non-randomized control groups. The difference between pre-measures and the most recent measurement regarding degree of depressive symptoms was significant in completed t-test and the reduction of symptoms appears to be on a par with results from the prior RCT. ICBT could be a treatment alternative for pregnant people with depression. Conclusions should be done with caution. Further studies in this field are of importance for validating results and to provide knowledge for the development of treatment for antenatal depression.

I Sverige drabbas ca 10 - 20% av kvinnor av depression under graviditeten eller efter förlossningen. Då tidigare forskning har gett indikationer på att depression kan ha en negativ inverkan på prenatal anknytning och mamma-barn bindning, är syftet med uppsatsen att undersöka detta hos mammor som genomgått internetbaserad kognitiv beteendeterapi (IKBT) för antenatal depression.  Denna uppsats skrevs i samarbete med den randomiserade DANA-studien om IKBT för gravida med depression. Uppsatsen var en prediktions- och sambandsstudie som tillämpar en inomgruppsdesign med tre mättillfällen; före och efter IKBT behandling samt postpartum.  Syftet med uppsatsen var bland annat att undersöka vilka faktorer som förutsäger mamma-barn bindning 8–10 veckor postpartum, samband mellan prenatal anknytning och behandlingsutfall samt samband mellan förändring i depression och förändring i prenatal anknytning under behandlingen. Resultatet indikerar att tidigare missfall samt prenatal anknytning före och efter behandlingen, kunde förutsäga mamma-barn bindning 8-10 veckor postpartum. Prenatal anknytning var inte en signifikant prediktor för förändring i depressionsnivå. Slutligen indikerar resultatet ett signifikant samband mellan förändring i prenatal anknytning samt förändring i depression före och efter behandlingen. / In Sweden, about 10-20% of women suffer from depression during pregnancy or after childbirth. As previous research has given indications that depression can have a negative impact on prenatal attachment and mother-infant bonding, the aim of the essay is to investigate this in mothers who underwent internet-based cognitive behavioral therapy (ICBT) for antenatal depression. This paper was written in collaboration with the DANA randomized trial of ICBT for pregnant women with depression. The design was a prediction and correlation study that applies a within-group design with three measurement occasions: before and after ICBT treatment and 8-10 weeks after childbirth. The purpose of the essay was, among other things, to investigate which factors predict mother-infant bonding 8–10 weeks postpartum, the relationship between prenatal attachment and treatment outcome, and the relationship between change in depression and change in prenatal attachment during treatment. The results indicate that previous miscarriages and prenatal attachment before and after treatment could predict mother-child bonding 8-10 weeks postpartum. Prenatal attachment was not a significant predictor of change in depression level. Finally, the results indicate a significant relationship between change in prenatal attachment and change in depression before and after treatment.