{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,13]],"date-time":"2026-06-13T21:26:19Z","timestamp":1781385979677,"version":"3.54.1"},"reference-count":16,"publisher":"BMJ","issue":"6581","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BMJ"],"published-print":{"date-parts":[[1987,5,9]]},"DOI":"10.1136\/bmj.294.6581.1192","type":"journal-article","created":{"date-parts":[[2009,4,2]],"date-time":"2009-04-02T19:19:55Z","timestamp":1238699995000},"page":"1192-1195","source":"Crossref","is-referenced-by-count":46,"title":["Randomised comparison of early versus late induction of labour in post-term pregnancy."],"prefix":"10.1136","volume":"294","author":[{"given":"K","family":"Augensen","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P","family":"Bergsjo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T","family":"Eikeland","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"K","family":"Askvik","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J","family":"Carlsen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","reference":[{"key":"ref_1","first-page":"628","article-title":"Differences in the reported frequencies of some obstetrical interventions in Europe. BrJ3 Obstet Gynaecol","volume":"90","author":"Bergsj0, P.; Schmidt, E.; Pusch, D.","year":"1983","unstructured":"Bergsj0 P, Schmidt E, Pusch D. Differences in the reported frequencies of some obstetrical interventions in Europe. BrJ3 Obstet Gynaecol 1983;90:628-32."},{"key":"ref_2","first-page":"34","article-title":"Intervention and causal inference in obstetric practice","volume-title":"and hazards of the new obstetrics","author":"Chalmers, I.; Richards, M.","year":"1977","unstructured":"Chalmers I, Richards M. Intervention and causal inference in obstetric practice. In: Chard T, Richards M, eds. Benefits and hazards of the new obstetrics. Lavenham: Spastics International Medical Publications, 1977:34-61."},{"key":"ref_3","first-page":"121","article-title":"Post-term pregnancy","volume-title":"Progress in obstetrics and gynecology. Vol 5","author":"Bergsj0, P.","year":"1985","unstructured":"Bergsj0 P. Post-term pregnancy. In: Studd J, ed. Progress in obstetrics and gynecology. Vol 5. Edinburgh: Churchill Livingstone, 1985:121-33."},{"key":"ref_4","first-page":"317","article-title":"Case-control analysis ofpost-tesm induction of labor","volume":"61","author":"Bergsjo, P.; Bakketeig, L.S.; Eikhom, S.N.","year":"1982","unstructured":"Bergsjo P, Bakketeig LS, Eikhom SN. Case-control analysis ofpost-tesm induction of labor. Acta Obstet Gynecol Scand 1982;61:317-24.","journal-title":"Acta Obstet Gynecol Scand"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"292","DOI":"10.1111\/j.1471-0528.1982.tb04698.x","article-title":"Prolonged pregnancy: Is induction of labour indicated? A prospective study","volume":"89","author":"Gibb, D.M.F.; Cardozo, L.D.; Studd, J.W.W.; Cooper, D.J.","year":"1982","unstructured":"Gibb DMF, Cardozo LD, Studd JWW, Cooper DJ. Prolonged pregnancy: Is induction of labour indicated? A prospective study. BrJ Obstet Gynaecol 1982;89:292-5.","journal-title":"BrJ Obstet Gynaecol"},{"key":"ref_6","first-page":"107","article-title":"Comparison de deux attitudes obstetricales vis-a-vis du declenchement artificiel du travail A terme","volume":"11","author":"Breart, G.; Gouiard, J.; Maillard, F.; Chavigny, C.; Rumeau-Rouquette, C.; Sureau, C.","year":"1982","unstructured":"Breart G, Gouiard J, Maillard F, Chavigny C, Rumeau-Rouquette C, Sureau C. Comparison de deux attitudes obstetricales vis-a-vis du declenchement artificiel du travail A terme. Joumnal de Gynecologie, Obstetriue etBiologie de la Reproduction 1982;11: 107-12."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"109","DOI":"10.1111\/j.1471-0528.1978.tb10462.x","article-title":"A randomized controlled trial of selective planned delivery","volume":"85","author":"Martin, D.H.; Thompson, W.; Pinkerton, J.H.M.; Watson, J.D.","year":"1978","unstructured":"Martin DH, Thompson W, Pinkerton JHM, Watson JD. A randomized controlled trial of selective planned delivery. BrJ Obstet Gynaecol 1978;85:109-13.","journal-title":"BrJ Obstet Gynaecol"},{"key":"ref_8","first-page":"767","article-title":"Elective induction of labour. A randomised prospective trial","volume":"i:","author":"Cole, R.A.; Howie, P.W.; Magnaughton, M.C.","year":"1975","unstructured":"Cole RA, Howie PW, Magnaughton MC. Elective induction of labour. A randomised prospective trial. Lancet 1975;i:767-70.","journal-title":"Lancet"},{"issue":"293","key":"ref_9","first-page":"1059","article-title":"Prolonged pregnancy: the management debate","volume":"1986","author":"Cardozo, L.; Fysh, J.; Pearce, J.M.","unstructured":"Cardozo L, Fysh J, Pearce JM. Prolonged pregnancy: the management debate. Br Med J 1986,293:1059-63.","journal-title":"Br Med J"},{"issue":"76","key":"ref_10","first-page":"131","article-title":"Nasal and buccal oxytocin for the induction of labour: a clinical trial. Joumal ofObstetrics and Gynaecology oftheBritish","volume":"1969","author":"Bergsj0, P.; Jenssen, H.","unstructured":"Bergsj0 P, Jenssen H. Nasal and buccal oxytocin for the induction of labour: a clinical trial. Joumal ofObstetrics and Gynaecology oftheBritish Commonuealth 1969;76:131-5.","journal-title":"Commonuealth"},{"key":"ref_11","first-page":"116","article-title":"Use of oxytocin and incidence of neonatal jaundice","volume":"ii:","author":"Chalmers, I.; Campbell, H.; Turnbull, A.C.","year":"1975","unstructured":"Chalmers I, Campbell H, Turnbull AC. Use of oxytocin and incidence of neonatal jaundice. BrMedJ 1975;ii:116-8.","journal-title":"BrMedJ"},{"key":"ref_12","first-page":"1235","article-title":"Factors influencing the incidence of neonatal jaundice","volume":"i:","author":"Friedman, L.; Lewis, P.J.; Clifton, P.; Bulpitt, C.J.","year":"1978","unstructured":"Friedman L, Lewis PJ, Clifton P, Bulpitt CJ. Factors influencing the incidence of neonatal jaundice. BrMedJ 1978;i: 1235-7.","journal-title":"BrMedJ"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"547","DOI":"10.1016\/0002-9378(84)90745-2","article-title":"Prolonged pregnancy: surveillance of the fetus and the neonate and the course of labor and delivery","volume":"148","author":"Shime, J.; Gare, D.J.; Andrews, J.; Bertrand, M.; Salgado, J.; Whillans, G.","year":"1984","unstructured":"Shime J, Gare DJ, Andrews J, Bertrand M, Salgado J, Whillans G. Prolonged pregnancy: surveillance of the fetus and the neonate and the course of labor and delivery. Am J Obstet Gynecol 1984;148:547-52.","journal-title":"Am J Obstet Gynecol"},{"key":"ref_14","first-page":"319","article-title":"Ultrasound assessment of the postmature pregnancy","volume":"65","author":"Moya, F.; Grannum, P.; Pinto, K.; Bracken, M.; Kadar, N.; Hobbins, J.C.","year":"1985","unstructured":"Moya F, Grannum P, Pinto K, Bracken M, Kadar N, Hobbins JC. Ultrasound assessment of the postmature pregnancy. Obstet Gynecol 1985;65:319-22.","journal-title":"Obstet Gynecol"},{"key":"ref_15","author":"Accepted, S.","year":"1987","unstructured":"(Accepted S March 1987)"},{"key":"ref_16","article-title":"There were no significant changes between the different stages of the study in the variables in the control room or any of the study rooms (unpaired t test). The mean negative ion concentration was 139\/ml before the study and 1841\/ml after activation (p<0-001). Because factors other than the negative ion concentration might have affected the linear analogue scale result each participant's ratings were adjusted by least squares multiple linear regression for the effects of temperature, relative humidity, and negative ion concentration to obtain a coefficient for the effect of negative ions. The suitability of this linear model was confirmed by plotting residuals against predicted values of the linear analogue scale","unstructured":"There were no significant changes between the different stages of the study in the variables in the control room or any of the study rooms (unpaired t test). The mean negative ion concentration was 139\/ml before the study and 1841\/ml after activation (p<0-001). Because factors other than the negative ion concentration might have affected the linear analogue scale result each participant's ratings were adjusted by least squares multiple linear regression for the effects of temperature, relative humidity, and negative ion concentration to obtain a coefficient for the effect of negative ions. The suitability of this linear model was confirmed by plotting residuals against predicted values of the linear analogue scale. The 95%"}],"container-title":["BMJ"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bmj.294.6581.1192","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,9,25]],"date-time":"2020-09-25T20:35:47Z","timestamp":1601066147000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.bmj.com\/lookup\/doi\/10.1136\/bmj.294.6581.1192"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1987,5,9]]},"references-count":16,"journal-issue":{"issue":"6581","published-print":{"date-parts":[[1987,5,9]]}},"URL":"https:\/\/doi.org\/10.1136\/bmj.294.6581.1192","relation":{},"ISSN":["0959-8138","1468-5833"],"issn-type":[{"value":"0959-8138","type":"print"},{"value":"1468-5833","type":"electronic"}],"subject":[],"published":{"date-parts":[[1987,5,9]]}}}