TY - JOUR AU - Kjaergaard, H. AU - Olsen, J. AU - Ottesen, B. AU - Dykes, A. K. PY - 2009 DA - 2009// TI - Incidence and outcomes of dystocia in the active phase of labor in term nulliparous women with spontaneous labor onset JO - Acta Obstet Gynecol Scand VL - 88 UR - https://doi.org/10.1080/00016340902811001 DO - 10.1080/00016340902811001 ID - Kjaergaard2009 ER - TY - JOUR AU - Mahon, T. R. AU - Chazotte, C. AU - Cohen, W. R. PY - 1994 DA - 1994// TI - Short labor: characteristics and outcome JO - Obstet Gynecol VL - 84 ID - Mahon1994 ER - TY - JOUR AU - Sheiner, E. AU - Levy, A. AU - Mazor, M. PY - 2004 DA - 2004// TI - Precipitate labor: higher rates of maternal complications JO - Eur J Obstet Gynecol Reprod Biol VL - 116 UR - https://doi.org/10.1016/j.ejogrb.2004.02.006 DO - 10.1016/j.ejogrb.2004.02.006 ID - Sheiner2004 ER - TY - JOUR AU - Ostborg, T. B. AU - Romundstad, P. R. AU - Eggebo, T. M. PY - 2017 DA - 2017// TI - Duration of the active phase of labor in spontaneous and induced labors JO - Acta Obstet Gynecol Scand VL - 96 UR - https://doi.org/10.1111/aogs.13039 DO - 10.1111/aogs.13039 ID - Ostborg2017 ER - TY - JOUR AU - Gunnarsson, B. AU - Smarason, A. K. AU - Skogvoll, E. AU - Fasting, S. PY - 2014 DA - 2014// TI - Characteristics and outcome of unplanned out-of-institution births in Norway from 1999 to 2013: a cross-sectional study JO - Acta Obstet Gynecol Scand VL - 93 UR - https://doi.org/10.1111/aogs.12450 DO - 10.1111/aogs.12450 ID - Gunnarsson2014 ER - TY - JOUR AU - Leftwich, H. K. AU - Gao, W. AU - Wilkins, I. PY - 2015 DA - 2015// TI - Does increase in birth weight change the normal labor curve? JO - Am J Perinatol VL - 32 ID - Leftwich2015 ER - TY - JOUR AU - Laughon, S. K. AU - Branch, D. W. AU - Beaver, J. AU - Zhang, J. PY - 2012 DA - 2012// TI - Changes in labor patterns over 50 years JO - Am J Obstet Gynecol VL - 206 UR - https://doi.org/10.1016/j.ajog.2012.03.003 DO - 10.1016/j.ajog.2012.03.003 ID - Laughon2012 ER - TY - JOUR AU - Zhang, J. AU - Troendle, J. AU - Mikolajczyk, R. AU - Sundaram, R. AU - Beaver, J. AU - Fraser, W. PY - 2010 DA - 2010// TI - The natural history of the normal first stage of labor JO - Obstet Gynecol VL - 115 UR - https://doi.org/10.1097/AOG.0b013e3181d55925 DO - 10.1097/AOG.0b013e3181d55925 ID - Zhang2010 ER - TY - JOUR AU - Hanley, G. E. AU - Munro, S. AU - Greyson, D. AU - Gross, M. M. AU - Hundley, V. AU - Spiby, H. PY - 2016 DA - 2016// TI - Diagnosing onset of labor: a systematic review of definitions in the research literature JO - BMC Pregnancy Childbirth VL - 16 UR - https://doi.org/10.1186/s12884-016-0857-4 DO - 10.1186/s12884-016-0857-4 ID - Hanley2016 ER - TY - JOUR AU - Neal, J. L. AU - Lowe, N. K. AU - Ahijevych, K. L. AU - Patrick, T. E. AU - Cabbage, L. A. AU - Corwin, E. J. PY - 2010 DA - 2010// TI - "Active labor" duration and dilation rates among low-risk, nulliparous women with spontaneous labor onset: a systematic review JO - J Midwifery Womens Health VL - 55 UR - https://doi.org/10.1016/j.jmwh.2009.08.004 DO - 10.1016/j.jmwh.2009.08.004 ID - Neal2010 ER - TY - JOUR AU - Zhang, J. AU - Troendle, J. F. AU - Yancey, M. K. PY - 2002 DA - 2002// TI - Reassessing the labor curve in nulliparous women JO - Am J Obstet Gynecol VL - 187 UR - https://doi.org/10.1067/mob.2002.127142 DO - 10.1067/mob.2002.127142 ID - Zhang2002 ER - TY - JOUR AU - Smith, G. C. AU - Cordeaux, Y. AU - White, I. R. AU - Pasupathy, D. AU - Missfelder-Lobos, H. AU - Pell, J. P. PY - 2008 DA - 2008// TI - The effect of delaying childbirth on primary cesarean section rates JO - PLoS Med VL - 5 UR - https://doi.org/10.1371/journal.pmed.0050144 DO - 10.1371/journal.pmed.0050144 ID - Smith2008 ER - TY - JOUR AU - Nesheim, B. I. PY - 1988 DA - 1988// TI - Duration of labor. An analysis of influencing factors JO - Acta Obstet Gynecol Scand VL - 67 UR - https://doi.org/10.3109/00016348809004182 DO - 10.3109/00016348809004182 ID - Nesheim1988 ER - TY - JOUR AU - Vahratian, A. AU - Zhang, J. AU - Troendle, J. F. AU - Savitz, D. A. AU - Siega-Riz, A. M. PY - 2004 DA - 2004// TI - Maternal prepregnancy overweight and obesity and the pattern of labor progression in term nulliparous women JO - Obstet Gynecol VL - 104 UR - https://doi.org/10.1097/01.AOG.0000142713.53197.91 DO - 10.1097/01.AOG.0000142713.53197.91 ID - Vahratian2004 ER - TY - JOUR AU - Incerti, M. AU - Locatelli, A. AU - Ghidini, A. AU - Ciriello, E. AU - Malberti, S. AU - Consonni, S. PY - 2008 DA - 2008// TI - Prediction of duration of active labor in nulliparous women at term JO - Am J Perinatol VL - 25 UR - https://doi.org/10.1055/s-2007-1004827 DO - 10.1055/s-2007-1004827 ID - Incerti2008 ER - TY - JOUR AU - Hemminki, E. AU - Simukka, R. PY - 1986 DA - 1986// TI - The timing of hospital admission and progress of labour JO - Eur J Obstet Gynecol Reprod Biol VL - 22 UR - https://doi.org/10.1016/0028-2243(86)90093-6 DO - 10.1016/0028-2243(86)90093-6 ID - Hemminki1986 ER - TY - JOUR AU - Alexander, J. M. AU - Sharma, S. K. AU - McIntire, D. D. AU - Leveno, K. J. PY - 2002 DA - 2002// TI - Epidural analgesia lengthens the Friedman active phase of labor JO - Obstet Gynecol VL - 100 ID - Alexander2002 ER - TY - JOUR AU - Bugg, G. J. AU - Siddiqui, F. AU - Thornton, J. G. PY - 2013 DA - 2013// TI - Oxytocin versus no treatment or delayed treatment for slow progress in the first stage of spontaneous labour JO - Cochrane Database Syst Rev VL - 6 ID - Bugg2013 ER - TY - JOUR AU - Wei, S. AU - Wo, B. L. AU - Qi, H. P. AU - Xu, H. AU - Luo, Z. C. AU - Roy, C. PY - 2013 DA - 2013// TI - Early amniotomy and early oxytocin for prevention of, or therapy for, delay in first stage spontaneous labour compared with routine care JO - Cochrane Database Syst Rev VL - 8 ID - Wei2013 ER - TY - JOUR AU - Smyth, R. M. AU - Alldred, S. K. AU - Markham, C. PY - 2013 DA - 2013// TI - Amniotomy for shortening spontaneous labour JO - Cochrane Database Syst Rev VL - 1 ID - Smyth2013 ER - TY - BOOK AU - Wood, S. PY - 2006 DA - 2006// TI - Generalized additive models: an introduction with R: CRC press ID - Wood2006 ER - TY - JOUR AU - Akaike, H. PY - 1974 DA - 1974// TI - A new look at the statistical model identification JO - IEEE Trans Autom Control VL - 19 UR - https://doi.org/10.1109/TAC.1974.1100705 DO - 10.1109/TAC.1974.1100705 ID - Akaike1974 ER - TY - BOOK AU - Efron, B. AU - Tibshirani, R. J. PY - 1994 DA - 1994// TI - An introduction to the bootstrap: CRC press ID - Efron1994 ER - TY - BOOK PY - 2014 DA - 2014// TI - R: A language and environment for statistical computing PB - R Foundation for Statistical Computing CY - Vienna ID - ref24 ER - TY - JOUR AU - Batallan, A. AU - Goffinet, F. AU - Paris-Llado, J. AU - Fortin, A. AU - Breart, G. AU - Madelenat, P. PY - 2002 DA - 2002// TI - Fetal macrosomia: management, obstetrical and neonatal results. Multicenter case-control study in 15 maternity hospitals in Paris and the Ile de France area JO - Gynecol Obstet Fertil VL - 30 UR - https://doi.org/10.1016/S1297-9589(02)00364-8 DO - 10.1016/S1297-9589(02)00364-8 ID - Batallan2002 ER - TY - JOUR AU - Jolly, M. C. AU - Sebire, N. J. AU - Harris, J. P. AU - Regan, L. AU - Robinson, S. PY - 2003 DA - 2003// TI - Risk factors for macrosomia and its clinical consequences: a study of 350,311 pregnancies JO - European Journal of Obstetrics & Gynecology and Reproductive Biology VL - 111 UR - https://doi.org/10.1016/S0301-2115(03)00154-4 DO - 10.1016/S0301-2115(03)00154-4 ID - Jolly2003 ER - TY - JOUR AU - Friedman, E. A. PY - 1955 DA - 1955// TI - Primigravid labor; a graphicostatistical analysis JO - Obstet Gynecol VL - 6 UR - https://doi.org/10.1097/00006250-195512000-00001 DO - 10.1097/00006250-195512000-00001 ID - Friedman1955 ER - TY - JOUR AU - Friedman, E. A. PY - 1956 DA - 1956// TI - Labor in multiparas; a graphicostatistical analysis JO - Obstet Gynecol VL - 8 ID - Friedman1956 ER - TY - JOUR AU - Noveroske, R. J. PY - 1979 DA - 1979// TI - Two applications of the Law of LaPlace to obstetrics JO - J Indiana State Med Assoc VL - 72 ID - Noveroske1979 ER - TY - JOUR AU - Ferrazzi, E. AU - Milani, S. AU - Cirillo, F. AU - Livio, S. AU - Piola, C. AU - Brusati, V. PY - 2015 DA - 2015// TI - Progression of cervical dilatation in normal human labor is unpredictable JO - Acta Obstet Gynecol Scand VL - 94 UR - https://doi.org/10.1111/aogs.12719 DO - 10.1111/aogs.12719 ID - Ferrazzi2015 ER - TY - JOUR AU - Bergsjo, P. AU - Bakketeig, L. AU - Eikhom, S. N. PY - 1979 DA - 1979// TI - Duration of labour with spontaneous onset JO - Acta Obstet Gynecol Scand VL - 58 UR - https://doi.org/10.3109/00016347909154570 DO - 10.3109/00016347909154570 ID - Bergsjo1979 ER - TY - JOUR AU - Treacy, A. AU - Robson, M. AU - O'Herlihy, C. PY - 2006 DA - 2006// TI - Dystocia increases with advancing maternal age JO - Am J Obstet Gynecol VL - 195 UR - https://doi.org/10.1016/j.ajog.2006.05.052 DO - 10.1016/j.ajog.2006.05.052 ID - Treacy2006 ER - TY - JOUR AU - Albers, L. L. PY - 1999 DA - 1999// TI - The duration of labor in healthy women JO - J Perinatol VL - 19 UR - https://doi.org/10.1038/sj.jp.7200100 DO - 10.1038/sj.jp.7200100 ID - Albers1999 ER - TY - JOUR AU - Rasmussen, S. AU - Bungum, L. AU - Hoie, K. PY - 1994 DA - 1994// TI - Maternal age and duration of labor JO - Acta Obstet Gynecol Scand VL - 73 UR - https://doi.org/10.3109/00016349409023445 DO - 10.3109/00016349409023445 ID - Rasmussen1994 ER - TY - JOUR AU - Blanch, G. AU - Lavender, T. AU - Walkinshaw, S. AU - Alfirevic, Z. PY - 1998 DA - 1998// TI - Dysfunctional labour: A randomised trial JO - Br J Obstet Gynaecol VL - 105 UR - https://doi.org/10.1111/j.1471-0528.1998.tb09362.x DO - 10.1111/j.1471-0528.1998.tb09362.x ID - Blanch1998 ER - TY - JOUR AU - Ovesen, P. AU - Rasmussen, S. AU - Kesmodel, U. PY - 2011 DA - 2011// TI - Effect of prepregnancy maternal overweight and obesity on pregnancy outcome JO - Obstet Gynecol VL - 118 UR - https://doi.org/10.1097/AOG.0b013e3182245d49 DO - 10.1097/AOG.0b013e3182245d49 ID - Ovesen2011 ER - TY - JOUR AU - Chin, J. R. AU - Henry, E. AU - Holmgren, C. M. AU - Varner, M. W. AU - Branch, D. W. PY - 2012 DA - 2012// TI - Maternal obesity and contraction strength in the first stage of labor JO - Am J Obstet Gynecol VL - 207 UR - https://doi.org/10.1016/j.ajog.2012.06.044 DO - 10.1016/j.ajog.2012.06.044 ID - Chin2012 ER - TY - JOUR AU - Kominiarek, M. A. AU - Vanveldhuisen, P. AU - Hibbard, J. AU - Landy, H. AU - Haberman, S. AU - Learman, L. PY - 2010 DA - 2010// TI - The maternal body mass index: a strong association with delivery route JO - Am J Obstet Gynecol VL - 203 UR - https://doi.org/10.1016/j.ajog.2010.06.024 DO - 10.1016/j.ajog.2010.06.024 ID - Kominiarek2010 ER - TY - JOUR AU - Kominiarek, M. A. AU - Zhang, J. AU - Vanveldhuisen, P. AU - Troendle, J. AU - Beaver, J. AU - Hibbard, J. U. PY - 2011 DA - 2011// TI - Contemporary labor patterns: the impact of maternal body mass index JO - Am J Obstet Gynecol VL - 205 UR - https://doi.org/10.1016/j.ajog.2011.06.014 DO - 10.1016/j.ajog.2011.06.014 ID - Kominiarek2011 ER - TY - JOUR AU - Calkins, L. A. PY - 1941 DA - 1941// TI - On predicting the length of labor JO - Am J Obstet Gynecol VL - 42 UR - https://doi.org/10.1016/S0002-9378(41)90171-0 DO - 10.1016/S0002-9378(41)90171-0 ID - Calkins1941 ER -