1. References 2. Koelewijn JM, Sluijs AM, Vrijkotte TGM: Possible relationship between general and pregnancy-related anxiety during the first half of pregnancy and the birth process: a prospective cohort study. BMJ open. 2017 May; 7(5):e013413-e013413. [ DOI:10.1136/bmjopen-2016-013413] 3. Zijlmans MAC, Beijers R, Riksen-Walraven MJ, de Weerth C: Maternal late pregnancy anxiety and stress is associated with children's health: a longitudinal study. Stress 2017 Oct; 20(5):495-504. [ DOI:10.1080/10253890.2017.1348497] 4. World Health Organization. Improving maternal mental health. 2008. Available from:https://www.who.int/mental_health/prevention/suicide/Perinatal_depression_mmh_final.pdf. 5. Al Gahtani AH, Al Khedair K, Al Jeheiman R, Al Turki HA, Al Qahtani NH. Anxiety and depression during pregnancy in women attending clinics in a University Hospital in Eastern province of Saudi Arabia: prevalence and associated factors. Int J Womens Health. 2018 Feb; 10:101-8. [ DOI:10.2147/IJWH.S153273] 6. Sadeghi N, Azizi Sh, Mollaeenejad M. Anxiety status at third trimester of pregnancy and related factors in Bandarabass hospital. Iran. J. Obstet. Gynecol. Infertil. 2014 Nov; 17(122):8-15. [Persian] 7. Effati-Daryani F, Mohammad-Alizadeh-Charandabi S, Zarei S, Mohammadi A, Mirghafourvand M. Depression, anxiety and stress in the various trimesters of pregnancy in women referring to Tabriz health centres, 2016. Int J Cult Ment Health. 2018 Feb; 1-9. [ DOI:10.1080/17542863.2018.1438484] 8. Silva MMJ, Nogueira DA, Clapis MJ, Leite EPRC. Anxiety in pregnancy: prevalence and associated factors. Rev Esc Enferm USP. 2017 Apr; 51. [ DOI:10.1590/s1980-220x2016048003253] 9. Soto-Balbuena C, Rodríguez MF, Escudero Gomis AI, Ferrer Barriendos JF, Le H-N, Pmb-Huca G. Incidence, prevalence and risk factors related to anxiety symptoms during pregnancy. Psicothema. 2018 Aug; 30(3):257-63. 10. Walsh TC. Exploring the effect of hospital admission on contraction patterns and labour outcomes using women's perceptions of events. Midwifery. 2009 Jun; 25(3):242-52. [ DOI:10.1016/j.midw.2007.03.009] 11. Mohammadierad R, Mohammad-Alizadeh-Charandabi S, Mirghafourvand M, Fazil F. Effect of Saffron with or without date sugar on intensity of pain and anxiety during labour in primiparous females: a randomized, controlled trial. Iran Red Crescent Med J. 2018 Jun; 20(S1):e61289. [ DOI:10.5812/ircmj.61289] 12. Akkoz Cevik S, Karaduman S: The effect of sacral massage on labor pain and anxiety: A randomized controlled trial. Jpn J Nurs Sci. 2020 Jan; 17(1):e12272. [ DOI:10.1111/jjns.12272] 13. Marchesi C, Ampollini P, Paraggio C, Giaracuni G, Ossola P, De Panfilis CH, et al. Risk factors for panic disorder in pregnancy: a cohort study. J Affect Disord. 2014 Mar; 156:134-8. [ DOI:10.1016/j.jad.2013.12.006] 14. Viswasam K, Eslick GD, Starcevic V. Prevalence, onset and course of anxiety disorders during pregnancy: A systematic review and meta analysis. J Affect Disord. 2019 Aug; 255:27-40. [ DOI:10.1016/j.jad.2019.05.016] 15. Fairbrother N, Young AH, Janssen P, Antony MM, Tucker E. Depression and anxiety during the perinatal period. BMC Psychiatry. 2015 Agu; 15:206. [ DOI:10.1186/s12888-015-0526-6] 16. Tumblin A, Simkin P. Pregnant women's perceptions of their nurse's role during labour and delivery. Birth. 2001 Mar; 28(1):52-6. [ DOI:10.1046/j.1523-536x.2001.00052.x] 17. Giardinelli L, Innocenti A, Benni L, Stefanini MC, Lino G, Lunardi C, et al. Depression and anxiety in perinatal period: prevalence and risk factors in an Italian sample. Arch Womens Ment Health. 2012 Feb; 15(1):21-30. [ DOI:10.1007/s00737-011-0249-8] 18. Ali NS, Iqbal SA, Badar SA, Sana SM. Frequency and associated factors for anxiety and depression in pregnant women: a hospital-based cross-sectional study. Scientific World Journal. 2012 May; 2012:653098. [ DOI:10.1100/2012/653098] 19. Akhlaghi F, Mokhber N, Shakeri MT, Shamsa F. Relation between depression, anxiety, self-esteem, marital satisfaction, demographical factor and maternal complications with fear of childbirth in nulliparous women. Journal of Fundamentals of Mental Health. 2012 Sep; 14(2):122-31. [Persian] 20. Nahaee J, Abbas-Alizadeh F, Mirghafourvand M, Mohammad-Alizadeh-Charandabi S: Pre- and during- labour predictors of dystocia in active phase of labour: a case-control study. BMC Pregnancy Childbirth. 2020 Jul; 20(1):425. [ DOI:10.1186/s12884-020-03113-5] 21. Nahaee J, Mohammad-Alizadeh-Charandabi S, Abbas-Alizadeh F, Martin CR, Hollins Martin CJ, Mirghafourvand M, et al: Pre- and during-labour predictors of low birth satisfaction among Iranian women: a prospective analytical study. BMC Pregnancy Childbirth 2020 Jul; 20(1):408. [ DOI:10.1186/s12884-020-03105-5] 22. Spielberger CD: Test anxiety inventory: "test attitude inventory". Palo Alto, Calif: Consulting Psychologists Press; 1980. 23. Mahram B. Validation of Spielberger anxiety test in Mashhad [dissertation]. Tehran: University of Oloom Tarbiaty Tabatabaie; 1994. [Persian] 24. Conningham FG, Leveno KJ, Bloom SL, Dashe JS, Hoffman BL, Casey BM, et al. Williams Obstetrics. 25th ed. New York: Mc Graw hill; 2018. 25. The American Cancer Society medical and editorial content team. Dehydration and Lack of Fluids 2015. Available from:https://www.cancer.org/treatment/treatments-and-side-effects/physical-side-effects/fluids-and-dehydration.html. 26. CRW VanVoorhis, L. Morgan B. Understanding power and rules of thumb for determining sample sizes. Tutorials in Quantitative Methods for Psychology. 2007 Sep; 3(2):43-50. [ DOI:10.20982/tqmp.03.2.p043] 27. Størksen HT, Eberhard-Gran M, Garthus-Niegel S, Eskild A. Fear of childbirth; The relation to anxiety and depression. Acta Obstet Gynecol Scand. 2011 Feb; 91(2):237-42. [ DOI:10.1111/j.1600-0412.2011.01323.x] 28. Salacz P, Csukly G, Haller J, Valent S. Association between subjective feelings of distress, plasma cortisol, anxiety, and depression in pregnant women. Eur J Obstet Gynecol Reprod Biol. 2012 Dec; 165(2):225-30. [ DOI:10.1016/j.ejogrb.2012.08.017] 29. Hoseininasab SD, Taghavi S, Ahmadian S. The effectiveness of prenatal education in decreasing the childbirth pain and anxiety. Med J Tabriz Uni Med Sciences. 2010 Mar; 31(4):24-30. [Persian] 30. Segal S, Csavoy AN, Datta S. The tocolytic effect of catecholamines in the gravid rat uterus. Eur J Obstet Gynecol Reprod Biol. 1998 Oct; 87(4):864-9. [ DOI:10.1213/00000539-199810000-00022] 31. Pross N. Effects of dehydration on brain functioning: A Life-Span Perspective. Ann Nutr Metab. 2017 Jun; 70 (Suppl. 1):30-6. [ DOI:10.1159/000463060] 32. Jacob L, Smith L, Jackson SE, Haro JM, Shin JI, Koyanagi A. Secondhand Smoking and depressive symptoms among in-school adolescents. Am J Prev Med. 2020 May; 58(5):613-21. [ DOI:10.1016/j.amepre.2019.12.008] 33. Moylan S, Jacka FN, Pasco JA, Berk M. How cigarette smoking may increase the risk of anxiety symptoms and anxiety disorders: a critical review of biological pathways. Brain Behav. 2013 May; 3(3):302-26. [ DOI:10.1002/brb3.137] 34. Pirdadeh Beiranvand S, Behboodi Moghadam Z, Salsali M, Alavi Majd H, Birjandi M, Bostani Khalesi Z . Prevalence of fear of childbirth and its associated factors in primigravid women: A cross- sectional study. Shiraz E Med J. 2017 Oct;18(11):e61896. [ DOI:10.5812/semj.61896] 35. O'Connell MA, Leahy-Warren P, Kenny LC, O'Neill SM, Khashan AS. The prevalence and risk factors of fear of childbirth among pregnant women: A cross-sectional study in Ireland. Acta Obstet Gynecol Scand. 2019 Aug; 98(8):1014-23. [ DOI:10.1111/aogs.13599] 36. Afusat OB. Prevalence and associated factors of anxiety and depression among pregnant women. J Neurol Neurosurg. 2018 Sep; 9(2):555758. [ DOI:10.19080/OAJNN.2018.09.555758] 37. References 38. Koelewijn JM, Sluijs AM, Vrijkotte TGM: Possible relationship between general and pregnancy-related anxiety during the first half of pregnancy and the birth process: a prospective cohort study. BMJ open. 2017 May; 7(5):e013413-e013413. [ DOI:10.1136/bmjopen-2016-013413] 39. Zijlmans MAC, Beijers R, Riksen-Walraven MJ, de Weerth C: Maternal late pregnancy anxiety and stress is associated with children's health: a longitudinal study. Stress 2017 Oct; 20(5):495-504. [ DOI:10.1080/10253890.2017.1348497] 40. World Health Organization. Improving maternal mental health. 2008. Available from:https://www.who.int/mental_health/prevention/suicide/Perinatal_depression_mmh_final.pdf. 41. Al Gahtani AH, Al Khedair K, Al Jeheiman R, Al Turki HA, Al Qahtani NH. Anxiety and depression during pregnancy in women attending clinics in a University Hospital in Eastern province of Saudi Arabia: prevalence and associated factors. Int J Womens Health. 2018 Feb; 10:101-8. [ DOI:10.2147/IJWH.S153273] 42. Sadeghi N, Azizi Sh, Mollaeenejad M. Anxiety status at third trimester of pregnancy and related factors in Bandarabass hospital. Iran. J. Obstet. Gynecol. Infertil. 2014 Nov; 17(122):8-15. [Persian] 43. Effati-Daryani F, Mohammad-Alizadeh-Charandabi S, Zarei S, Mohammadi A, Mirghafourvand M. Depression, anxiety and stress in the various trimesters of pregnancy in women referring to Tabriz health centres, 2016. Int J Cult Ment Health. 2018 Feb; 1-9. [ DOI:10.1080/17542863.2018.1438484] 44. Silva MMJ, Nogueira DA, Clapis MJ, Leite EPRC. Anxiety in pregnancy: prevalence and associated factors. Rev Esc Enferm USP. 2017 Apr; 51. [ DOI:10.1590/s1980-220x2016048003253] 45. Soto-Balbuena C, Rodríguez MF, Escudero Gomis AI, Ferrer Barriendos JF, Le H-N, Pmb-Huca G. Incidence, prevalence and risk factors related to anxiety symptoms during pregnancy. Psicothema. 2018 Aug; 30(3):257-63. 46. Walsh TC. Exploring the effect of hospital admission on contraction patterns and labour outcomes using women's perceptions of events. Midwifery. 2009 Jun; 25(3):242-52. [ DOI:10.1016/j.midw.2007.03.009] 47. Mohammadierad R, Mohammad-Alizadeh-Charandabi S, Mirghafourvand M, Fazil F. Effect of Saffron with or without date sugar on intensity of pain and anxiety during labour in primiparous females: a randomized, controlled trial. Iran Red Crescent Med J. 2018 Jun; 20(S1):e61289. [ DOI:10.5812/ircmj.61289] 48. Akkoz Cevik S, Karaduman S: The effect of sacral massage on labor pain and anxiety: A randomized controlled trial. Jpn J Nurs Sci. 2020 Jan; 17(1):e12272. [ DOI:10.1111/jjns.12272] 49. Marchesi C, Ampollini P, Paraggio C, Giaracuni G, Ossola P, De Panfilis CH, et al. Risk factors for panic disorder in pregnancy: a cohort study. J Affect Disord. 2014 Mar; 156:134-8. [ DOI:10.1016/j.jad.2013.12.006] 50. Viswasam K, Eslick GD, Starcevic V. Prevalence, onset and course of anxiety disorders during pregnancy: A systematic review and meta analysis. J Affect Disord. 2019 Aug; 255:27-40. [ DOI:10.1016/j.jad.2019.05.016] 51. Fairbrother N, Young AH, Janssen P, Antony MM, Tucker E. Depression and anxiety during the perinatal period. BMC Psychiatry. 2015 Agu; 15:206. [ DOI:10.1186/s12888-015-0526-6] 52. Tumblin A, Simkin P. Pregnant women's perceptions of their nurse's role during labour and delivery. Birth. 2001 Mar; 28(1):52-6. [ DOI:10.1046/j.1523-536x.2001.00052.x] 53. Giardinelli L, Innocenti A, Benni L, Stefanini MC, Lino G, Lunardi C, et al. Depression and anxiety in perinatal period: prevalence and risk factors in an Italian sample. Arch Womens Ment Health. 2012 Feb; 15(1):21-30. [ DOI:10.1007/s00737-011-0249-8] 54. Ali NS, Iqbal SA, Badar SA, Sana SM. Frequency and associated factors for anxiety and depression in pregnant women: a hospital-based cross-sectional study. Scientific World Journal. 2012 May; 2012:653098. [ DOI:10.1100/2012/653098] 55. Akhlaghi F, Mokhber N, Shakeri MT, Shamsa F. Relation between depression, anxiety, self-esteem, marital satisfaction, demographical factor and maternal complications with fear of childbirth in nulliparous women. Journal of Fundamentals of Mental Health. 2012 Sep; 14(2):122-31. [Persian] 56. Nahaee J, Abbas-Alizadeh F, Mirghafourvand M, Mohammad-Alizadeh-Charandabi S: Pre- and during- labour predictors of dystocia in active phase of labour: a case-control study. BMC Pregnancy Childbirth. 2020 Jul; 20(1):425. [ DOI:10.1186/s12884-020-03113-5] 57. Nahaee J, Mohammad-Alizadeh-Charandabi S, Abbas-Alizadeh F, Martin CR, Hollins Martin CJ, Mirghafourvand M, et al: Pre- and during-labour predictors of low birth satisfaction among Iranian women: a prospective analytical study. BMC Pregnancy Childbirth 2020 Jul; 20(1):408. [ DOI:10.1186/s12884-020-03105-5] 58. Spielberger CD: Test anxiety inventory: "test attitude inventory". Palo Alto, Calif: Consulting Psychologists Press; 1980. 59. Mahram B. Validation of Spielberger anxiety test in Mashhad [dissertation]. Tehran: University of Oloom Tarbiaty Tabatabaie; 1994. [Persian] 60. Conningham FG, Leveno KJ, Bloom SL, Dashe JS, Hoffman BL, Casey BM, et al. Williams Obstetrics. 25th ed. New York: Mc Graw hill; 2018. 61. The American Cancer Society medical and editorial content team. Dehydration and Lack of Fluids 2015. Available from:https://www.cancer.org/treatment/treatments-and-side-effects/physical-side-effects/fluids-and-dehydration.html. 62. CRW VanVoorhis, L. Morgan B. Understanding power and rules of thumb for determining sample sizes. Tutorials in Quantitative Methods for Psychology. 2007 Sep; 3(2):43-50. [ DOI:10.20982/tqmp.03.2.p043] 63. Størksen HT, Eberhard-Gran M, Garthus-Niegel S, Eskild A. Fear of childbirth; The relation to anxiety and depression. Acta Obstet Gynecol Scand. 2011 Feb; 91(2):237-42. [ DOI:10.1111/j.1600-0412.2011.01323.x] 64. Salacz P, Csukly G, Haller J, Valent S. Association between subjective feelings of distress, plasma cortisol, anxiety, and depression in pregnant women. Eur J Obstet Gynecol Reprod Biol. 2012 Dec; 165(2):225-30. [ DOI:10.1016/j.ejogrb.2012.08.017] 65. Hoseininasab SD, Taghavi S, Ahmadian S. The effectiveness of prenatal education in decreasing the childbirth pain and anxiety. Med J Tabriz Uni Med Sciences. 2010 Mar; 31(4):24-30. [Persian] 66. Segal S, Csavoy AN, Datta S. The tocolytic effect of catecholamines in the gravid rat uterus. Eur J Obstet Gynecol Reprod Biol. 1998 Oct; 87(4):864-9. [ DOI:10.1213/00000539-199810000-00022] 67. Pross N. Effects of dehydration on brain functioning: A Life-Span Perspective. Ann Nutr Metab. 2017 Jun; 70 (Suppl. 1):30-6. [ DOI:10.1159/000463060] 68. Jacob L, Smith L, Jackson SE, Haro JM, Shin JI, Koyanagi A. Secondhand Smoking and depressive symptoms among in-school adolescents. Am J Prev Med. 2020 May; 58(5):613-21. [ DOI:10.1016/j.amepre.2019.12.008] 69. Moylan S, Jacka FN, Pasco JA, Berk M. How cigarette smoking may increase the risk of anxiety symptoms and anxiety disorders: a critical review of biological pathways. Brain Behav. 2013 May; 3(3):302-26. [ DOI:10.1002/brb3.137] 70. Pirdadeh Beiranvand S, Behboodi Moghadam Z, Salsali M, Alavi Majd H, Birjandi M, Bostani Khalesi Z . Prevalence of fear of childbirth and its associated factors in primigravid women: A cross- sectional study. Shiraz E Med J. 2017 Oct;18(11):e61896. [ DOI:10.5812/semj.61896] 71. O'Connell MA, Leahy-Warren P, Kenny LC, O'Neill SM, Khashan AS. The prevalence and risk factors of fear of childbirth among pregnant women: A cross-sectional study in Ireland. Acta Obstet Gynecol Scand. 2019 Aug; 98(8):1014-23. [ DOI:10.1111/aogs.13599] 72. Afusat OB. Prevalence and associated factors of anxiety and depression among pregnant women. J Neurol Neurosurg. 2018 Sep; 9(2):555758. [ DOI:10.19080/OAJNN.2018.09.555758]
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