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. 2016 Oct 28;18(10):e283. doi: 10.2196/jmir.6362

Table 3.

Significant determinants of pregnant women’s intention (n=346).

Construct Odds ratio (95% CI)
TPBa Extended TPB Extended TPB and
subjective numeracy
Extended TPB and
subjective literacy
Extended TPB and
objective numeracy
Extended TPB and
objective literacyb
Attitude 13.38
(6.40-27.90)
9.16
(4.02-20.85)
9.13
(4.00-20.84)
9.26
(4.06-21.11)
9.58
(4.14-22.12)
N/Ac
Subjective norm 3.64
(2.33-5.70)
0.91
(0.51-1.61)
0.91
(0.51-1.61)
0.90
(0.50-1.60)
0.89
(0.50-1.59)
N/A
Perceived control 2.36
(1.43-3.90)
1.69
(0.92-3.08)
1.68
(0.91-3.09)
1.75
(0.95-3.22)
1.65
(0.89-3.03)
N/A
Anticipated regret N/A 2.43
(1.71-3.46)
2.44
(1.70-3.48)
2.33
(1.61-3.36)
2.47
(1.73-3.52)
N/A
Descriptive norm N/A 2.83
(1.63-4.92)
2.83
(1.63-4.92)
2.82
(1.62-4.90)
2.84
(1.64-4.93)
N/A
Moral norm N/A 7.97
(4.49-14.14)
7.97
(4.49-14.15)
8.38
(4.65-15.06)
7.92
(4.46-14.08)
N/A
Health literacyd N/A N/A 1.02
(0.58-1.81)
0.78
(0.43-1.43)
1.18
(0.66-2.12)
N/A
Deviance 316.78 358.11 358.10 357.48 357.80 N/A
∆ deviance
41.33 0.01 0.63 0.31 N/A
P value
<.001 .92 .43 .58 N/A

aTPB: Theory of Planned Behavior.

bObjective literacy could not be added to the regression model because of the lack of variability in the distribution.

cN/A: not applicable.

dSubjective numeracy: score≥ median versus score < median; subjective health literacy: adequate versus inadequate; objective numeracy: all correct answers versus one error or more.