Table 2: Oral health of COHRA2 women during pregnancy (2011–2015).

VariablePittsburghWest VirginiaCombined value1
Mean
(±SD)
Mean
(±SD)
Mean
(±SD)

Dental caries
 Average D1MFT23578.86
(±7.3)
36313.47
(±7.3)
72011.18
(±7.6)
<0.000013
 Average D2MFT23576.71
(±5.7)
3637.89
(±6.1)
7207.30
(±5.9)
0.0073

%%% value

D1MFT
 0278%21%294%<0.00001
 >033092%36199%69196%
D2MFT
 04011%247%649%0.04
 >031789%33993%65691%
Gingival health
Mouth bleeding
 Does your mouth bleed
 when you brush?
  Yes12437%15348%27742%0.004
  No21363%16452%37758%
If yes, how often?
 ≤2-3 times a month 3528%4228%7728%0.10
 1 time a week1915%2718%4617%
 2–6 times a week4032%3120%7126%
 ≥1 time a day3024%5234%8230%
ORI score4
 Excellent7220%5415%12618%<0.000015
 Good19455%14640%34047%
 Questionable10%72%81%
 Poor6518%12635%19127%
 Very poor236%298%527%

value tests differences between Pittsburgh and West Virginia sites.
2D1MFT: decayed, filled, and missing tooth score, white spots coded as decay; D2MFT: decayed, filled, and missing tooth score, white spots coded as sound.
3Wilcoxon rank sum test with continuity correction.
4ORI, measure of gingival health.
5Fisher exact test.