The HAPPY study (Holistic Approach to Pregnancy and the first Postpartum Year): Design of a large prospective cohort study

BMC Pregnancy and Childbirth

Volumn 14, Issue 1, 2014, Pages

  Truijens, Sophie E M ^a   Meems, Margreet ^b   Kuppens, Simone M I ^c   Broeren, Maarten A C ^a   Nabbe, Karin C A M ^d   Wijnen, Hennie A ^e   Oei, S G ^a   van Son, Maarten J M ^f   Pop, Victor J M ^b  

^a MÁXIMA MEDICAL CENTER   (Netherlands)

^b TILBURG UNIVERSITY   (Netherlands)

^c CATHARINA HOSPITAL   (Netherlands)

^d Diaconessenhuis   (Netherlands)

^e Clinical Laboratory Diagnostiek voor U ^*  (Netherlands)

^f UTRECHT UNIVERSITY   (Netherlands)

Author keywords

Breastfeeding; Childbirth; Delivery; Depression; Distress; Maternal well being; Postpartum; Pregnancy; Thyroid function; Trimester specific symptoms

Indexed keywords

CHORIONIC GONADOTROPIN; THYROID PEROXIDASE ANTIBODY; THYROTROPIN; AUTOANTIBODY; THYROID MICROSOMAL ANTIBODIES; THYROXINE;

ANHEDONIA; ARTICLE; BLOOD ANALYSIS; BREAST FEEDING; CARPAL TUNNEL SYNDROME; CHILD DEVELOPMENT; CHILDBIRTH; COHORT ANALYSIS; EDINBURGH POSTNATAL DEPRESSION SCALE; EMOTIONAL STRESS; FEMALE; FREE THYROXINE INDEX; HUMAN; LABOR; MOOD; MOOD CHANGE; NAUSEA AND VOMITING; NEWBORN SCREENING; PERINATAL DEVELOPMENT; PREGNANCY; PREGNANCY COMPLICATION; PREGNANCY OUTCOME; PROSPECTIVE STUDY; PSYCHOLOGICAL ASPECT; PUERPERAL DEPRESSION; PUERPERIUM; QUESTIONNAIRE; THYROID FUNCTION; UMBILICAL CORD BLOOD; WELLBEING; BLOOD; DELIVERY; DEPRESSION; LONGITUDINAL STUDY; MENTAL STRESS; METHODOLOGY; MOOD DISORDERS; MORNING SICKNESS; NETHERLANDS; NEWBORN; PHILOSOPHY; POSTNATAL CARE; PRENATAL CARE; PSYCHOLOGY;

ANHEDONIA; AUTOANTIBODIES; BREAST FEEDING; CARPAL TUNNEL SYNDROME; CHORIONIC GONADOTROPIN; DELIVERY, OBSTETRIC; DEPRESSION; FEMALE; HOLISTIC HEALTH; HUMANS; INFANT, NEWBORN; LABOR, OBSTETRIC; LONGITUDINAL STUDIES; MOOD DISORDERS; MORNING SICKNESS; NEONATAL SCREENING; NETHERLANDS; POSTNATAL CARE; PREGNANCY; PRENATAL CARE; PROSPECTIVE STUDIES; RESEARCH DESIGN; STRESS, PSYCHOLOGICAL; SURVEYS AND QUESTIONNAIRES; THYROTROPIN; THYROXINE;

EID: 84908402108     PISSN: None     EISSN: 14712393     Source Type: Journal    
DOI: 10.1186/1471-2393-14-312     Document Type: Article

References (86)

1. Goodwin TM. Nausea and vomiting of pregnancy: an obstetric syndrome. Am J Obstet Gynecol 2002, 186(5):184-189. 10.1067/mob.2002.122592, 11854632.
2. Ebrahimi N, Maltepe C, Bournissen FG, Koren G. Nausea and vomiting of pregnancy: using the 24-hour Pregnancy-Unique Quantification of Emesis (PUQE-24) scale. J Obstet Gynaecol Can 2009, 31(9):803-807.
3. Glinoer D. What happens to the normal thyroid during pregnancy?. Thyroid 1999, 9(7):631-635. 10.1089/thy.1999.9.631, 10447005.
4. Osterman M, Ilyas AM, Matzon JL. Carpal tunnel syndrome in pregnancy. Orthop Clin North Am 2012, 43(4):515-520. 10.1016/j.ocl.2012.07.020, 23026467.
5. Sax TW, Rosenbaum RB. Neuromuscular disorders in pregnancy. Muscle Nerve 2006, 34(5):559-571. 10.1002/mus.20661, 16969835.
6. Voitk AJ, Mueller JC, Farlinger DE, Johnston RU. Carpal tunnel syndrome in pregnancy. Can Med Assoc J 1983, 128(3):277-281. 1874761, 6821784.
7. Atroshi I, Gummesson C, Johnsson R, Sprinchorn A. Symptoms, disability, and quality of life in patients with carpal tunnel syndrome. J Hand Surg [Am] 1999, 24(2):398-404. 10.1016/S0363-5023(99)70014-6, 10194028.
8. Patel JN, McCabe SJ, Myers J. Characteristics of sleep disturbance in patients with carpal tunnel syndrome. Hand 2012, 7(1):55-58. 10.1007/s11552-011-9373-1, 3280366, 23449036.
9. Stolp-Smith KA, Pascoe MK, Ogburn PL. Carpal tunnel syndrome in pregnancy: frequency, severity, and prognosis. Arch Phys Med Rehabil 1998, 79(10):1285-1287. 10.1016/S0003-9993(98)90276-3, 9779685.
10. Padua L, Di Pasquale A, Pazzaglia C, Liotta GA, Librante A, Mondelli M. Systematic review of pregnancy-related carpal tunnel syndrome. Muscle Nerve 2010, 42(5):697-702. 10.1002/mus.21910, 20976778.
11. Mondelli M, Rossi S, Monti E, Aprile I, Caliandro P, Pazzaglia C, Romano C, Padua L. Prospective study of positive factors for improvement of carpal tunnel syndrome in pregnant women. Muscle Nerve 2007, 36(6):778-783. 10.1002/mus.20863, 17657802.
12. Sapuan J, Yam KF, Noorman MF, De Cruz PK, Abdul Razab WN, Rozali ZI, Sikkandar MF, Singh R. Carpal tunnel syndrome in pregnancy - you need to ask!. Singapore Med J 2012, 53(10):670-675.
13. Levine DW, Simmons BP, Koris MJ, Daltroy LH, Hohl GG, Fossel AH, Katz JN. A self-administered questionnaire for the assessment of severity of symptoms and functional status in carpal tunnel syndrome. J Bone Joint Surg Am 1993, 75(11):1585-1592.
14. Leite JC, Jerosch-Herold C, Song F. A systematic review of the psychometric properties of the Boston Carpal Tunnel Questionnaire. BMC Musculoskelet Disord 2006, 7:78. 10.1186/1471-2474-7-78, 1624826, 17054773.
15. Bakhsh H, Ibrahim I, Khan W, Smitham P, Goddard N. Assessment of validity, reliability, responsiveness and bias of three commonly used patient-reported outcome measures in carpal tunnel syndrome. Ortop Traumatol Rehabil 2012, 14(4):335-340.
16. Van Dijk MA, Reitsma JB, Fischer JC, Sanders GT. Indications for requesting laboratory tests for concurrent diseases in patients with carpal tunnel syndrome: a systematic review. Clin Chem 2003, 49(9):1437-1444. 10.1373/49.9.1437, 12928223.
17. Bennett HA, Einarson A, Taddio A, Koren G, Einarson TR. Prevalence of depression during pregnancy: systematic review. Obstet Gynecol 2004, 103:698-709. 10.1097/01.AOG.0000116689.75396.5f, 15051562.
18. Alder J, Fink N, Bitzer J, Hösli I, Holzgreve W. Depression and anxiety during pregnancy: a risk factor for obstetric fetal and neonatal outcome? A critical review of the literature. J Matern Fetal Neonatal Med 2007, 20(3):189-209. 10.1080/14767050701209560, 17437220.
19. Heron J, O'Connor TG, Evans J, Golding J, Glover V. The course of anxiety and depression through pregnancy and the postpartum in a community sample. J Affect Disord 2004, 80:65-73. 10.1016/j.jad.2003.08.004, 15094259.
20. Newham JJ, Martin CR. Measuring fluctuations in maternal well-being and mood across pregnancy. J Reprod Infant Psychol 2013, 31(5):531-540.
21. Sibitz I, Berger P, Freidl M, Topitz A, Krautgartner M, Spiegel W, Katschnig H. ICD-10 or DSM-IV? Anhedonia, fatigue and depressed mood as screening symptoms for diagnosing a current depressive episode in physically ill patients in general hospital. J Affect Disord 2010, 126:245-251. 10.1016/j.jad.2010.03.023, 20400184.
22. Liu CH, Tronick E. Prevalence and predictors of maternal postpartum depressed mood and anhedonia by race and ethnicity. Epidemiol Psychiatr Sci 2014, 23(2):201-209. 10.1017/S2045796013000413, 23931673.
23. Damen NL, Pelle AJ, Boersma E, Serruys PW, Van Domburg RT, Pedersen SS. Reduced positive affect (anhedonia) is independently associated with 7-year mortality in patients treated with percutaneous coronary intervention: results from the RESEARCH registry. Eur J Prev Cardiol 2013, 20(1):127-134. 10.1177/2047487312436452, 22345679.
24. Davidson KW, Burg MM, Kronish IM, Shimbo D, Dettenborn L, Mehran R, Vorchheimer D, Clemow L, Schwartz JE, Lespérance F, Rieckmann N. Association of anhedonia with recurrent major adverse cardiac events and mortality 1 year after acute coronary syndrome. Arch Gen Psychiatry 2010, 67(5):480-488. 10.1001/archgenpsychiatry.2010.36, 3058237, 20439829.
25. Dunkel Schetter C, Tanner L. Anxiety, depression and stress in pregnancy: implications for mothers, children, research and practice. Curr Opin Psychiatry 2012, 25(2):141-148. 10.1097/YCO.0b013e3283503680, 22262028.
26. Littleton HL, Breitkopf CR, Berenson AB. Correlates of anxiety symptoms during pregnancy and association with perinatal outcomes: a meta-analysis. Am J Obstet Gynecol 2007, 196(5):424-432. 10.1016/j.ajog.2007.03.042, 17466693.
27. Littleton HL, Bye K, Buck K, Amacker A. Psychosocial stress during pregnancy and perinatal outcomes: a meta-analytic review. J Psychosom Obstet Gynaecol 2010, 31(4):219-218. 10.3109/0167482X.2010.518776, 21039328.
28. Andersson L, Sundström-Poromaa I, Wulff M, Aström M, Bixo M. Neonatal outcome following maternal antenatal depression and anxiety: a population-based study. Am J Epidemiol 2004, 159(9):872-881. 10.1093/aje/kwh122, 15105180.
29. Chung TKH, Lau TK, Yip ASK, Chiu HFK, Lee DTS. Antepartum depressive symptomatology is associated with adverse obstetric and neonatal outcome. Psychosom Med 2001, 63(5):830-834. 10.1097/00006842-200109000-00017, 11573032.
30. The Netherlands Perinatal Registry [Stichting Perinatale Registratie Nederland] Perinatal Care in the Netherlands 2004 [Perinatale Zorg in Nederland 2004] 2007, Utrecht: The Netherlands Perinatal Registry, The Netherlands Perinatal Registry [Stichting Perinatale Registratie Nederland].
31. The Netherlands Perinatal Registry [Stichting Perinatale Registratie Nederland] Perinatal Care in the Netherlands 2012 [Perinatale Zorg in Nederland 2012] 2013, Utrecht: The Netherlands Perinatal Registry, The Netherlands Perinatal Registry [Stichting Perinatale Registratie Nederland].
32. Anim-Somuah M, Smyth RMD, Jones L. Epidural versus non-epidural or no analgesia in labour. Cochrane Database Syst Rev 2011, 12:CD000331. doi:10.1002/14651858.CD000331.pub3.
33. Van den Bergh BR, Mulder EJ, Mennes M, Glover V. Antenatal maternal anxiety and stress and the neurobehavioural development of the fetus and child: links and possible mechanisms. A review. Neurosci Biobehav Rev 2005, 29(2):237-258. 10.1016/j.neubiorev.2004.10.007, 15811496.
34. O'Connor TG, Heron J, Golding J, Beveridge M, Glover V. Maternal antenatal anxiety and children's behavioural/emotional problems at 4 years. Report form the Avon Longitudinal Study of Parents and Children. Br J Psychiatry 2002, 180:502-508. 10.1192/bjp.180.6.502, 12042228.
35. Prummel MF, Wiersinga WM. Thyroid autoimmunity and miscarriage. Eur J Endocrinol 2004, 150(6):751-755. 10.1530/eje.0.1500751, 15191343.
36. Stagnaro-Green A, Abalovich M, Alexander E, Azizi F, Mestman J, Negro R, Nixon A, Pearce EN, Soldin OP, Sullivan S, Wiersinga W, . American Thyroid Association Taskforce on Thyroid Disease During Pregnancy and Postpartum Guidelines of the American Thyroid Association for the diagnosis and management of thyroid disease during pregnancy and postpartum. Thyroid 2011, 21(10):1081-1125. 10.1089/thy.2011.0087, 3472679, 21787128, American Thyroid Association Taskforce on Thyroid Disease During Pregnancy and Postpartum.
37. Wilson KL, Casey BM, McIntire DD, Halvorson LM, Cunningham FG. Subclinical thyroid disease and the incidence of hypertension in pregnancy. Obstet Gynecol 2012, 119:315-320. 10.1097/AOG.0b013e318240de6a, 22270283.
38. Cassar NJ, Grima AP, Ellul GJ, Schembri-Wismayer P, Calleja-Agius J. Screening for thyroid disease in pregnancy: a review. Minerva Ginecol 2013, 65(4):471-484.
39. Kooistra L, Kuppens SM, Hasaart TH, Vader HL, Wijnen HA, Oei SG, Pop VJ. High thyrotrophin levels at end term increase the risk of breech presentation. Clin Endrocrinol (Oxf) 2010, 73(5):661-665.
40. Kuppens SM, Kooistra L, Wijnen HA, Crawford S, Vader HL, Hasaart TH, Oei SG, Pop VJ. Maternal thyroid function during gestation is related to breech presentation at term. Clin Endocrinol (Oxf) 2010, 72(6):820-824.
41. Kuijpens JL, Vader HL, Drexhage HA, Wiersinga WM, van Son MJ, Pop VJ. Thyroid peroxidase antibodies during gestation are a marker for subsequent depression postpartum. Eur J Endocrinol 2001, 145(5):579-584. 10.1530/eje.0.1450579, 11720875.
42. Pop VJ, Wijnen HA, Lapkienne L, Bunivicius R, Vader HL, Essed GG. The relation between gestational thyroid parameters and depression: a reflection of the downregulation of the immune system during pregnancy?. Thyroid 2006, 16(5):485-492. 10.1089/thy.2006.16.485, 16756471.
43. Casey BM, Leveno KJ. Thyroid disease in pregnancy. Obstet Gynecol 2006, 108(5):1283-1292. 10.1097/01.AOG.0000244103.91597.c5, 17077257.
44. Stagnaro-Green A. Overt hyperthyroidism and hypothyroidism during pregnancy. Clin Obstet Gynecol 2011, 54(3):478-487. 10.1097/GRF.0b013e3182272f32, 21857178.
45. Pop VJ, De Vries E, Van Baar AL, Waelkens JJ, De Rooy HA, Horsten M, Donkers MM, Komproe IH, Van Son MM, Vader HL. Maternal thyroid peroxidise antibodies during pregnancy: a marker of impaired child development?. J Clin Endocrinol Metab 1995, 80(12):3561-3566. 10.1210/jcem.80.12.8530599, 8530599.
46. Pop VJ, Brouwers EP, Vader HL, Vulsma T, Van Baar AL, De Vijlder JJ. Matenal hypothyroxinaemia during early pregnancy and subsequent child development: a 3-year follow-up study. Clin Endocrinol (Oxf) 2003, 59(3):282-288. 10.1046/j.1365-2265.2003.01822.x, 12919150.
47. Kuppens SM, Kooistra L, Wijnen HA, Vader HL, Hasaart TH, Oei SG, Vulsma T, Pop VJ. Neonatal thyroid screening results are related to gestational maternal thyroid function. Clin Endocrinol (Oxf) 2011, 75(3):382-387. 10.1111/j.1365-2265.2011.04083.x, 21521349.
48. Medici M, De Rijke YB, Peeters RP, Visser W, De Muinck Keizer-Schrama SM, Jaddoe VV, Hofman A, Hooijkaas H, Steegers EA, Tiemeier H, Bongers-Schokking JJ, Visser TJ. Maternal early pregnancy and newborn thyroid hormone parameters: the Generation R study. J Clin Endocrinol Metab 2012, 97(2):646-652. 10.1210/jc.2011-2398, 22162477.
49. O'Hara MW, McCabe JE. Postpartum depression: current status and future directions. Annu Rev Clin Psychol 2013, 9:379-407. 10.1146/annurev-clinpsy-050212-185612, 23394227.
50. Beck CT. The effects of postpartum depression on child development: a meta-analysis. Arch Psychiatr Nurs 1998, 12(1):12-20. 10.1016/S0883-9417(98)80004-6, 9489170.
51. Murray L, Cooper PJ. Postpartum Depression and Child Development 2007, New York: Guilford Press.
52. Chase-Brand J. Effects of maternal postpartum depression on the infant and older siblings. Perinatal and Postpartum Mood Disorders: Perspectives and Treatment Guide for the Healthcare Practitioner 2008, 41-47. New York: Springer Pub, Stone SD, Menken AE.
53. Moehler E, Brunner R, Wiebel A, Reck C, Resch F. Maternal depressive symptoms in the postnatal period are associated with long-term impairment of mother-child bonding. Arch Womens Ment Health 2006, 9(5):273-278. 10.1007/s00737-006-0149-5, 16937313.
54. World Health Organization (WHO) Infant and Young Child Feeding 2013, Fact sheet N 342; [http://www.who.int/mediacentre/factsheets/fs342/en/], World Health Organization (WHO).
55. Lanting CI, Van Wouwe JP. Survey on milkfeeding of infants 2007: Breastfeeding in The Netherlands [Peiling Melkvoeding van Zuigelingen 2007: Borstvoeding in Nederland en relatie met certificering door stichting Zorg voor Borstvoeding]. 2007, Leiden: TNO-KvL.
56. National databank of statistics The Netherlands [Centraal Bureau voor Statistiek] Childbirth, Length and Weight at Delivery, and Breastfeeding [Bevalling, Lengte En Gewicht Bij Geboorte, Borstvoeding] 2013, Den Haag: Statistics Netherlands, National databank of statistics The Netherlands [Centraal Bureau voor Statistiek].
57. Cattaneo A, Yngve A, Koletzko B, Guzman LR. Protection, promotion and support of breast-feeding in Europe: current situation. Public Health Nutr 2005, 8(1):39-46. 10.1079/PHN2005660, 15705244.
58. Van der Wilk EA. Breastfeeding: Are there differences between The Netherlands and other countries? [Borstvoeding: Zijn er verschillen tussen Nederland en andere landen?]. Volksgezondheid Toekomst Verkenning, Nationaal Kompas Volksgezondheid 2013, Bilthoven: RIVM.
59. De Jager E, Skouteris H, Broadbent J, Amir L, Mellor K. Psychosocial correlates of exclusive breastfeeding: a systematic review. Midwifery 2013, 29(5):506-518. 10.1016/j.midw.2012.04.009, 23099152.
60. Abdulwadud OA, Snow ME. Interventions in the workplace to support breastfeeding for women in employment. Cochrane Database Syst Rev 2012, 10:CD006177. DOI: 10.1002/14651858.CD006177.pub3.
61. Meedya S, Fahy K, Kable A. Factors that positively influence breastfeeding duration to 6 months: a literature review. Women Birth 2010, 23(4):135-145. 10.1016/j.wombi.2010.02.002, 20299299.
62. Figueiredo B, Canário C, Field T. Breastfeeding is negatively affected by prenatal depression and reduces postpartum depression. Psychol Med 2014, 44(5):927-936. 10.1017/S0033291713001530, 23822932.
63. Figueiredo B, Dias CC, Brandão S, Canário C, Nunes-Costa R. Breastfeeding and postpartum depression: state of the art review. J Pediatr (Rio J) 2013, 89(4):332-338. 10.1016/j.jped.2012.12.002, 23791236.
64. Kummeling I, Thijs C, Penders J, Snijders BEP, Koopmans M, Dagnelie PC, Huber M, Jansen MCJF, De Bie R, Van Den Brandt P. Etiology of atopy in infancy: The KOALA Birth Cohort Study. Pediatr Allergy Immunol 2005, 16(8):679-684. 10.1111/j.1399-3038.2005.00333.x, 16343090.
65. Dozier AM, Howard CR, Brownell EA, Wissler RN, Glantz JC, Ternullo SR, Thevenet-Morrison KN, Childs CK, Lawrence RA. Labor epidural anesthesia, obstetric factors and breastfeeding cessation. Matern Child Health J 2013, 17(4):689-698. 10.1007/s10995-012-1045-4, 3622113, 22696104.
66. Odent MR. Synthetic oxytocin and breastfeeding: reasons for testing an hypothesis. Med Hypotheses 2013, 81(5):889-891. 10.1016/j.mehy.2013.07.044, 23948601.
67. Gavin NI, Gaynes BN, Lohr KN, Meltzer-Brody S, Gartlehner G, Swinson T. Perinatal depression: a systematic review of prevalence and incidence. Obstet Gynecol 2005, 106:1071-1083. 10.1097/01.AOG.0000183597.31630.db, 16260528.
68. Pocock SJ. Clinical Trials: A Practical Approach 1983, New York: Wiley & Sons.
69. Pop VJ, Pommer AM, Pop-Purceleanu M, Wijnen HA, Bergink V, Pouwer F. Development of the Tilburg Pregnancy Distress Scale: the TPDS. BMC Pregnancy Childbirth 2011, 11:80. 10.1186/1471-2393-11-80, 3216243, 22029691.
70. Cox JL, Holden JM, Sagovsky R. Detection of postnatal depression. Development of the 10-item Edinburgh postnatal depression scale. Br J Psychiatry 1987, 150:782-786. 10.1192/bjp.150.6.782, 3651732.
71. Pop VJ, Komproe IH, van Son MJ. Characteristics of the Edinburgh post natal depression scale in The Netherlands. J Affect Disord 1992, 26(2):105-110. 10.1016/0165-0327(92)90041-4, 1447427.
72. Bergink V, Kooistra L, den Berg MP L-V, Wijnen H, Bunevicius R, Van Baar A, Pop V. Validation of the Edinburgh Depression Scale during pregnancy. J Psychosom Res 2011, 70(4):385-389. 10.1016/j.jpsychores.2010.07.008, 21414460.
73. De Cock ES, Emons WH, Nefs G, Pop VJ, Pouwer F. Dimensionality and scale properties of the Edinburgh Depression Scale (EDS) in patients with type 2 diabetes mellitus: the DiaDDzoB study. BMC Psychiatry 2011, 11:141. 10.1186/1471-244X-11-141, 3179715, 21864349.
74. Wardenaar KJ, Van Veen T, Giltay EJ, De Beurs E, Penninx BWJH, Zitman FG. Development and validation of a 30-item short adaptation of the Mood and Anxiety symptoms questionnaire (MASQ). Psychiatry Res 2010, 179:101-106. 10.1016/j.psychres.2009.03.005, 20472297.
75. Watson D, Weber K, Assenheimer JS, Clark LA, Strauss ME, McCormick RA. Testing a tripartite model: I. Evaluating the convergent and discriminant validity of anxiety and depression symptom scales. J Abn Psychol 1995, 104(1):3-14.
76. Gibson J, McKenzie-McHarg K, Shakespeare J, Price J, Gray R. A systematic review of studies validating the Edinburgh Postnatal Depression Scale in antepartum and postpartum women. Acta Psychiatr Scand 2009, 119(5):350-364. 10.1111/j.1600-0447.2009.01363.x, 19298573.
77. Spitzer RL, Kroenke K, Williams JB, Löwe B. A brief measure for assessing generalized anxiety disorder: the GAD-7. Arch Intern Med 2006, 166(10):1092-1097. 10.1001/archinte.166.10.1092, 16717171.
78. Löwe B, Decker O, Müller S, Brähler E, Schellberg D, Herzog W, Herzberg PY. Validation and standardization of the generalized anxiety disorder screener (GAD-7) in the general population. Med Care 2008, 46(3):266-274. 10.1097/MLR.0b013e318160d093, 18388841.
79. Köke AJA, Heuts PHTG, Vlaeyen JWS, Weber WEJ. Meetinstrumenten Chronische Pijn. Deel 1 Functionele Status. 1999, 40-41. Maastricht: Pijn Kennis Centrum Maastricht.
80. Tabachnick GG, Fidell LS. Using Multivariate Statistics 2007, Boston: Pearson education, 5.
81. Kline P. The Handbook of Psychological Testing 1993, London: Routledge.
82. Browne M, Cudeck R. Alternative Ways of Assessing Model Fit. Testing Structural Equation Models 1993, 136-162. Newbury Park: Sage, Bollen K, Long J.
83. Hu L, Bentler PM. Cutoff criteria for fit indexes in covariance structure analysis: conventional criteria versus new alternatives. Struct Equ Model 1999, 6(1):1-55.
84. De Vet HCW, Adèr HJ, Terwee CB, Pouwer F. Are factor analytical techniques used appropriately in the validation of health status questionnaires? A systematic review on the quality of factor analysis of the SF-36. Qual Life Res 2005, 14(5):1203-1218. 10.1007/s11136-004-5742-3, 16047498.
85. Mallinckrodt CH, Sanger TM, Dubé S, DeBrota DJ, Molenberghs G, Carroll RJ, Potter WZ, Tollefson GD. Assessing and interpreting treatment effects in longitudinal clinical trials with missing data. Biol Psychiatry 2003, 53(8):754-760. 10.1016/S0006-3223(02)01867-X, 12706959.
86. Pop VJ, Wijnen HA, Lapkienne L, Bunivicius R, Vader HL, Essed GE. The relation between gestational thyroid parameters and depression: a reflection of the downregulation of the immune system during pregnancy?. Thyroid 2006, 16(5):485-492. 10.1089/thy.2006.16.485, 16756471.