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Table 2 Selected models for the time to clinically-recognized pregnancy (first-stage model), the result of that pregnancy (second-stage model) and the probability of verification. All results are reported as: estimate (SD)

From: A multistate competing risks framework for preconception prediction of pregnancy outcomes

 

First Stage

Second Stage

Verification

 

logit[P(Ti=t|Ti≥t)]

log(Ï€i2|1/Ï€i4|1)

log(Ï€i3|1/Ï€i4|1)

\(\text {logit}\left (\pi _{i}^{R}\right)\)

Intercept

-0.542 (0.370)

-3.025 (0.754)

-0.827 (1.096)

2.050 (0.515)

I(t=2)

-0.047 (0.117)

—

—

—

I(t=3)

-0.148 (0.129)

—

—

—

I(t=4)

-0.152 (0.141)

—

—

—

I(t=5)

-0.456 (0.167)

—

—

—

I(t=6)

-0.402 (0.178)

—

—

—

Menstrual cycles trying prior to baseline

-0.120 (0.019)

—

—

—

Aspirin use

0.185 (0.086)

—

—

—

Age (in years)

-0.026 (0.010)

0.041 (0.022)

-0.032 (0.035)

—

Number of previous pregnancy losses

0.058 (0.092)

0.265 (0.210)

-0.089 (0.330)

—

Non-Hispanic white

0.444 (0.159)

0.012 (0.422)

-0.698 (0.463)

0.773 (0.278)

College degree

0.251 (0.093)

—

—

0.474 (0.236)

BMI

-0.027 (0.007)

—

—

-0.024 (0.015)

Parous

0.357 (0.090)

—

—

0.366 (0.214)

Smoker (past year)

—

—

—

-0.973 (0.258)

Hypertension

—

0.412 (0.253)

0.741 (0.367)

—