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. Author manuscript; available in PMC: 2017 Jul 26.
Published in final edited form as: J Perinatol. 2017 Jan 26;37(6):641–644. doi: 10.1038/jp.2016.274

Table 1.

Demographics

Magnesium exposed(%)
N=11,789		 Unexposed (%)
N=16,246
Gestation (weeks)
 < 26    5165 (44%)    7346 (45%)
 26–28    5400 (46%)    6781 (42%)
 ≥ 29    1224 (10%)    2109 (13%)
Birth weight (g)
 ≤ 750    5374 (46%)    7683 (47%)
 751–1000    6415 (54%)    8563 (53%)
Race/Ethnicity
 White    4902 (42%)    6442 (40%)
 Black    3892 (33%)    5187 (32%)
 Hispanic    2011 (17%)    3151 (19%)
 Other      647 (5%)      845 (5%)
Multiple gestation    2072 (18%)    2576 (16%)
Male    5802 (49%)    8080 (50%)
PROM    1579 (13%)    2467 (15%)
Antenatal steroids 11,098 (94%) 11,336 (70%)
Antenatal antibiotics    6451 (55%)    5697 (35%)
Postnatal hydrocortisone      888 (8%)    1374 (8%)
Postnatal indomethacin    2369 (20%)    3045 (19%)

PROM: prolonged rupture of membranes