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Table 1 Number of prenatal care visits according to adequacy of prenatal care use and gestational age at initiation of prenatal care, Aracaju, Brazil, 2005.

From: Risk factors for inadequate prenatal care use in the metropolitan area of Aracaju, Northeast Brazil

Variable Mean SD Median IQR n
Adequacy of prenatal care use
Absent 0 0 0 0 75
Inadequate* 4.62 1.78 5 3 1216
Intermediate 3.69 0.47 4 1 245
Adequate 5.58 0.56 6 1 1103
Intensive 8.22 1.48 8 2 1909
Gestational age at initiation of prenatal care (weeks)
< 16 6.56 2.20 6 3 3937
≥ 16 4.13 1.78 4 2 611
Total 6.24 2.30 6 3 4548
  1. SD – standard deviation; IQR – interquartile range
  2. * Four mothers were classified as having inadequate prenatal care use because care started ≥ 16 weeks had missing values on the number of visits.