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Table 1 Randomization effectiveness: baseline characteristics of study sample mothers by treatment group.

From: Design and implementation of a dental caries prevention trial in remote Canadian Aboriginal communities

Variable N Test N Control Z1
Age (years)2 130 25.5 (6.4), 15 - 44 137 25.6 (5.8), 15 - 39 -0.11
Stage of pregnancy (weeks)2 102 22.4 (8.7), 6 - 38 90 17.7 (12.1), 0 - 36 2.25
Knowledge score2 127 3.1 (1.2), 0 - 5 140 2.9 (1.4), 0 - 5 0.57
Has other children2 129 83 (64.3%) 140 92 (65.7%) 0.32
Other child had prior tooth extraction3,4 82 28 (34.1%) 92 45 (48.9%) 1.09
Brush with fluoride toothpaste3 130 120 (92.3%) 141 130 (92.2%) 0.04
Saw dentist < 2 years ago3 130 93 (71.5%) 141 104 (73.8%) -0.42
  1. 1Z = observed Z-statistic for comparison of MI and Control groups using Generalized Estimating Equations to account for clustering of subjects within communities
  2. 2Results shown are mean (SD), minimum - maximum
  3. 3Results shown are number positive for the variable (% positive).
  4. 4 Only responses of mothers with other children are included