Abstract
The aim of this study was to determine whether meteorological factors are associated with the timing of either onset of labor with intact membranes or rupture of membranes prior to labor—together referred to as ‘the initiating event’ of parturition. All patients delivering at Evanston Hospital after spontaneous labor or rupture of membranes at ≥20 weeks of gestation over a 6-month period were studied. Logistic regression models of the initiating event of parturition using clinical variables (maternal age, gestational age, parity, multiple gestation and intrauterine infection) with and without the addition of meteorological variables (barometric pressure, temperature and humidity) were compared. A total of 1,088 patients met the inclusion criteria. Gestational age, multiple gestation and chorioamnionitis were associated with timing of initiation of parturition (P < 0.01). The addition of meteorological to clinical variables generated a statistically significant improvement in prediction of the initiating event; however, the magnitude of this improvement was small (less than 2% difference in receiver-operating characteristic score). These observations held regardless of parity, fetal number and gestational age. Meteorological factors are associated with the timing of parturition, but the magnitude of this association is small.
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Changnon SA, Westcott NE (2002) A record number of heavy rainstorms in Chicago in 2001. Trans Ill State Acad Sci 95:73–85
Driscoll DM (1995) Weather and childbirth: a further search for relationships. Int J Biometeorol 38:152–155
Driscoll DM, Merker DG (1984) A search for associations between weather and the onset of human parturition. Int J Biometeorol 28:211–224
Hanley JA, McNeil BJ (1982) The meaning and use of the area under a receiver operating characteristic (ROC) curve. Radiology 143:29–36
King EA, Fleschler RG, Cohen SM (1997) Association between significant decrease in barometric pressure and onset of labor. J Nurse Midwifery 42:32–34
Marks J, Church CK, Benrubi G (1983) Effects of barometric pressure and lunar phases on premature rupture of the membranes. J Reprod Med 28:485–488
Morton-Pradhan S, Bay RC, Coonrod DV (2005) Birth rate and its correlation with the lunar cycle and specific atmospheric conditions. Am J Obstet Gynecol 192:1970–1973
Noller KL, Resseguie LJ, Voss V (1996) The effect of changes in atmospheric pressure on the occurrence of the spontaneous onset of labor in term pregnancies. Am J Obstet Gynecol 174:1192–1197, discussion 1197–1199
Polansky GH, Varner MW, O'Gorman T (1985) Premature rupture of the membranes and barometric pressure changes. J Reprod Med 30:189–191
Steinman G, Kleiner GJ (1978) Spontaneous premature rupture of membranes. Correlation with ambient atmospheric pressure. N Y State J Med 78:900–901
Stern EW, Glazer GL, Sanduleak N (1988) Influence of the full and new moon on onset of labor and spontaneous rupture of membranes. J Nurse Midwifery 33:57–61
Trap R, Helm P, Lidegaard O, Helm E (1989) Premature rupture of the fetal membranes, the phases of the moon and barometer readings. Gynecol Obstet Investig 28:14–18
Acknowledgments
We acknowledge the kind assistance of David Changnon, PhD in interpretation of meteorological data, and Shalini Roy for assistance with analysis.
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Hirsch, E., Lim, C., Dobrez, D. et al. Meteorological factors and timing of the initiating event of human parturition. Int J Biometeorol 55, 265–272 (2011). https://doi.org/10.1007/s00484-010-0332-2
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DOI: https://doi.org/10.1007/s00484-010-0332-2