Table 4.

Associations of covariates with whether or not the participant agreed with each of 14 belief statements

	Belief Statement*
	Exercise During Pregnancy				Exercise to Avoid During Pregnancy				Benefits of Exercise and Physical Activity During Pregnancy
Covariates	1	2	3	4	5	6	7	8	10	11	12	13	14	15
Maternal age in years:
<30	0	0	0	0	0	0	0	0	0	0	0	0	0	0
30-34	0	−	0	−	0	0	0	+	0	0	0	0	0	0
>=35	Referent
Race/ethnicity
Nonhispanic Black	0	0	0	− −	0	0	0	0	0	0	− −	0	−	0
Nonhispanic White	+	0	0	+	−	+	++	0	++	0	+	0	0	0
Other	Referent
Marital status:
Married	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Single/Separated/divorced/widowed	Referent
Education
>=16 years	0	+	0	++	−	++	++	++	++	0	0	0	0	0
13-15 years	0	0	0	0	0	0	0	0	0	0	0	++	0	0
<=12 years	Referent
Work status at phone interview 2
Yes	0	0	0	0	0	0	−	0	0	0	0	0	+	0
No	Referent
General health
Excellent	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Very good	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Good, fair, or poor	Referent
Pregravid BMI (kg/m^2):
Low/Normal (<=26.0)	−	0	0	0	0	0	0	++	0	0	0	0	0	0
Overweight (26.0<−29.0)	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Obese (>29.0)	Referent
Parity
2 or more	0	0	0	0	0	−	− −	0	0	0	0	0	0	0
1	0	0	0	0	0	0	0	0	0	0	0	0	0	−
0	Referent
Physical activity advice from health professional
Yes	0	0	0	0	0	0	0	0	0	0	0	0	0	0
No	Referent
Exercise before pregnancy
Yes	0	−	0	0	0	0	0	0	0	0	0	0	0	0
No	Referent
Exercise during pregnancy
First and second trimester	+	+	+	0	0	0	0	0	++	++	0	++	++	0
First or second trimester	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Neither trimester	Referent
Year survey completed
2004/2005	0	0	++	0	0	0	0	0	0	0	0	0	0	0
2003	0	0	0	0	0	0	0	++	0	0	+	0	0	0
2001/2002	Referent

^*Belief statements are listed in Table 2 verbatim. All logistic models control for the covariates presented (n=1014 for each model). The model predicting agreement with engaging in mild exercise (#9) is not presented, due to the high prevalence of the outcome.

Symbol definitions:

• OR>=2.0 and p<0.05 = ++

• OR>1.0-1.99 and p<0.05 = +

• OR>0.5-0.99 and p<0.05 = −

• OR>0-0.5 and p<0.05 = −−

• Otherwise =0