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

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

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 extraction^3,4	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

¹Z = observed Z-statistic for comparison of MI and Control groups using Generalized Estimating Equations to account for clustering of subjects within communities
²Results shown are mean (SD), minimum - maximum
³Results shown are number positive for the variable (% positive).
⁴ Only responses of mothers with other children are included

ISSN: 1745-6215