Educational attainment of 25 year old Norwegians according to birth order and genderKRISTENSEN, Petter; BJERKEDAL, Tor.Intelligence (Norwood). 2010, Vol 38, Num 1, pp 123-136, issn 0160-2896, 14 p.Article

Dealing with emigration in cohort studies: follow-up of mortality and cancer incidence among Norwegians born between 1967 and 1976KRISTENSEN, Petter; BJERKEDAL, Tor.European journal of epidemiology. 2010, Vol 25, Num 3, pp 155-161, issn 0393-2990, 7 p.Article

Early life determinants of musculoskeletal sickness absence in a cohort of Norwegians born in 1967-1976KRISTENSEN, Petter; BJERKEDAL, Tor; IRGENS, Lorentz M et al.Social science & medicine (1982). 2007, Vol 64, Num 3, pp 646-655, issn 0277-9536, 10 p.Article

A prospective cohort study of risk factors for disability retirement because of back pain in the general working populationHAGEN, Kare B; TAMBS, Kristian; BJERKEDAL, Tor et al.Spine (Philadelphia, PA. 1976). 2002, Vol 27, Num 16, pp 1790-1796, issn 0362-2436Article

Physically demanding situations as predictors of disability pensioning with soft tissue rheumatism among persons 30-39 years old in Norway, 1981-90HOLTE, Hilde H; TAMBS, Kristian; BJERKEDAL, Tor et al.Journal of rheumatology. 2002, Vol 29, Num 8, pp 1760-1766, issn 0315-162XArticle

EDUCATIONAL ATTAINMENT OF NORWEGIAN MEN: INFLUENCE OF PARENTAL AND EARLY INDIVIDUAL CHARACTERISTICSKRISTENSEN, Petter; GRAVSETH, Hans M; BJERKEDAL, Tor et al.Journal of biosocial science (Print). 2009, Vol 41, Num 6, pp 799-814, issn 0021-9320, 16 p.Article

Pregnancy complications and the risk of asthma among Norwegians born between 1967 and 1993NAFSTAD, Per; SAMUELSEN, Sven O; IRGENS, Lorentz M et al.European journal of epidemiology. 2003, Vol 18, Num 8, pp 755-761, issn 0393-2990, 7 p.Article

Impact of aerobic fitness on musculoskeletal sickness absence 5-15 years later: a cohort study of 227 201 male Norwegian employeesKRISTENSEN, Petter; CORBETT, Karina; SIVESIND MEHLUM, Ingrid et al.Occupational and environmental medicine (London). 2012, Vol 69, Num 4, pp 250-255, issn 1351-0711, 6 p.Article

Birthweight and work participation in adulthood. Commentary : Cardiovascular diseaseKRISTENSEN, Petter; BJERKEDAL, Tor; IRGENS, Lorentz M et al.International journal of epidemiology. 2004, Vol 33, Num 4, pp 849-857, issn 0300-5771, 9 p.Article

Intelligence test scores and birth order among young Norwegian men (conscripts) analyzed within and between familiesBJERKEDAL, Tor; KRISTENSEN, Petter; SKJERET, Geir A et al.Intelligence (Norwood). 2007, Vol 35, Num 5, pp 503-514, issn 0160-2896, 12 p.Article

Associations of birth defects with adult intellectual performance, disability and mortality : Population-based cohort studyEIDE, Martha G; SKJAERVEN, Rolv; IRGENS, Lorentz M et al.Pediatric research. 2006, Vol 59, Num 6, pp 848-853, issn 0031-3998, 6 p.Article

Duration of employment is not a predictor of disability of cleaners: a longitudinal studyGAMPERIENE, Migle; NYGARD, Jan F; BRAGE, Sören et al.Scandinavian journal of public health. 2003, Vol 31, Num 1, pp 63-68, issn 1403-4948, 6 p.Article

The association of Apgar score with subsequent death and cerebral palsy: A population-based study in term infantsMOETER, Dag; LIE, Rolv T; IRGENS, Lorentz M et al.The Journal of pediatrics. 2001, Vol 138, Num 6, issn 0022-3476, 791,798-803 [7 p.]Article

The Association of High Birth Weight With Intelligence in Young Adulthood: A Cohort Study of Male SiblingsKRISTENSEN, Petter; SUSSER, Ezra; IRGENS, Lorentz M et al.American journal of epidemiology. 2014, Vol 180, Num 9, pp 876-884, issn 0002-9262, 9 p.Article

Maternal epilepsy and offsprings' adult intelligence : A population-based study from NorwayØYEN, Nina; VOLLSET, Stein E; EIDE, Martha G et al.Epilepsia (Copenhagen). 2007, Vol 48, Num 9, pp 1731-1738, issn 0013-9580, 8 p.Article

Increasing risk of gastroschisis in Norway: An age-period-cohort analysisKAZAURA, Method R; LIE, Rolv T; IRGENS, Lorentz M et al.American journal of epidemiology. 2004, Vol 159, Num 4, pp 358-363, issn 0002-9262, 6 p.Article

Life course determinants for early disability pension : a follow-up of Norwegian men and women born 1967-1976. CommentaryBONNEUX, Luc; MAGNE GRAVSETH, Hans; BJERKEDAL, Tor et al.European journal of epidemiology. 2007, Vol 22, Num 8, issn 0393-2990, 483-485, 533-543 [14 p.]Article

Breech delivery and intelligence: A population-based study of 8,738 breech infantsEIDE, Martha G; ØYEN, Nina; SKJAERVEN, Rolv et al.Obstetrics and gynecology (New York. 1953). 2005, Vol 105, Num 1, pp 4-11, issn 0029-7844, 8 p.Article

Size at birth and gestational age as predictors of adult height and weightEIDE, Martha G; ØYEN, Nina; SKJOERVEN, Rolv et al.Epidemiology (Cambridge, Mass.). 2005, Vol 16, Num 2, pp 175-181, issn 1044-3983, 7 p.Article