Table 4.
Selected key exposures of online versus offline participants of the ELF cohort.
| Characteristics |
|
|
Online | Offline | All | P value |
|
|
|
|
n=468 (%) | n=574 (%) | N=1,042 (%) |
|
| BMI (kg/m2) |
|
|
|
|
|
|
|
|
Prepregnancy | BMI<18.5 | 3.3 | 3.1 | 3.2 |
|
|
|
|
BMI 18.5-<25.0 | 50.5 | 57.5 | 54.3 |
|
|
|
|
BMI 25.0-<30.0 | 31.1 | 25.4 | 28.0 |
|
|
|
|
BMI≥30.0 | 15.1 | 14.0 | 14.5 |
|
|
|
|
Missing datad | n=11 | n=23 | n=34 | P= .14 |
| Smoking | During Pregnancy | No | 94.4 | 89.0 | 91.4 |
|
|
|
|
Yes | 5.6 | 11.0 | 8.6 |
|
|
|
|
Missing data | n=0 | n=1 | n=1 | P= .002 |
| Quit Smoking | During Pregnancy | Smoked but Quit | 95.5 | 91.7 | 93.4 |
|
|
|
|
No Smoking | 4.5 | 8.3 | 6.6 |
|
|
|
|
No. of participants reporting | n=463 | n=556 | n=1,019 | P= .01 |
| Alcohol |
During Pregnancy | No | 75.5 | 67.2 | 70.9 |
|
|
|
|
Yes | 24.5 | 32.8 | 29.1 |
|
|
|
|
Missing data | n=6 | n=0 | n=6 | P=.004 |
| Drugsa | During Pregnancy | No | 97.4 | 96.7 | 97.0 |
|
|
|
|
Yes | 2.6 | 3.3 | 3.0 |
|
|
|
|
Missing data | n=3 | n=0 | n=3 | P= .49 |
| Comorbiditiesb (ever vs never) | During Pregnancy | Respiratory Diseases | 42.6 | 43.7 | 43.2 |
|
|
|
|
Missing data | n=1 | n=0 | n=1 | P= .71 |
|
|
|
STIc | 18.7 | 21.0 | 20.0 |
|
|
|
|
Missing | n=2 | n=3 | n=5 | P= .34 |
|
|
|
Mental Health Disorders | 31.6 |
29.0 |
20.0 |
|
|
|
|
Missing data | n=2 | n=2 | n=4 | P= .37 |
|
|
|
Reproductive Diseases | 38.4 | 32.8 | 35.3 |
|
|
|
|
Missing data | n=2 | n=3 | n=5 | P= .058 |
|
|
|
High blood pressure | 6.2 | 6.6 | 6.5 |
|
|
|
|
Missing data | n=2 | n=3 | n=5 | P= .79 |
|
|
|
Diabetes | 1.1 | 0.9 | 1.0 |
|
|
|
|
Missing data | n=4 | n=0 | n=4 | P= .83 |
|
|
|
Other | 83.7 | 81.9 | 82.7 |
|
|
|
|
Missing data | n=1 | n=0 | n=1 | P= .43 |
aIllicit use during pregnancy.
bComorbidities=numbers do not add up to 100 due to coexisting morbidities.
cSTI=Sexually transmitted infections.
dMissing data was not included in the analyses.