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Table 2 Rates (%) of VPTB and PTB by maternal race/ethnicity, and comparison of VPTB and PTB with Hmong women, California, 2002–2004

From: Preterm birth among the hmong, other Asian subgroups and non-hispanic whites in California

  Incidence (%) of HMONG VS. WHITES/ASIAN SUBGROUPS
  VPTB PTB VPTB PTB
  (<32 weeks) (<37 weeks) OR 95 % CI OR 95 % CI
White 0.60 5.43 0.61 (0.45, 0.84) 0.64 (0.57, 0.72)
Hmong 0.97 8.22 (reference) --- (reference) ---
Chinese 0.49 4.69 0.50 (0.36, 0.71) 0.55 (0.49, 0.62)
Japanese 0.56 5.10 0.57 (0.37, 0.89) 0.60 (0.52, 0.70)
Korean 0.40 3.79 0.41 (0.27, 0.62) 0.44 (0.38, 0.51)
Asian Indian 0.63 5.53 0.64 (0.45, 0.92) 0.65 (0.58, 0.74)
Vietnamese 0.51 5.86 0.52 (0.36, 0.75) 0.70 (0.61, 0.79)
Cambodian 0.92 9.91 0.95 (0.61, 1.47) 1.23 (1.06, 1.43)
Filipino 1.00 8.14 1.03 (0.74, 1.42) 0.99 (0.88, 1.11)
Lao/Thai 1.02 9.07 1.05 (0.69, 1.62) 1.11 (0.96, 1.30)
  1. Note. Bold figures indicates statistically significant differences at p < 0.05 level