Please select the eligibility criteria that correspond to the clinical trial below.
Title: Developing and Scaling a Text Messaging Tool to Help Pregnant Smokers
Brief Summary: The goal of this project is to evaluate the effectiveness (Phase II) of a text-based program to be called Quit4Baby to support smoking cessation efforts of pregnant women who smoke.

In Phase II, Dr. Abroms will conduct a randomized clinical trial among 500 pregnant smokers who have been recruited from users of text4baby - the first large scale mobile health application in the United States. Developed and operated by Voxiva and Healthy Mothers, Healthy Babies (HMHB)-collaborators in this program -text4baby is a free national service that has enrolled more than 800,000 pregnant women and mothers of infants 0-1 nationwide and delivered more than 150 million health messages to them including messages encouraging them not to smoke during pregnancy and referring them to quit lines.

Hypothesis 1: Pregnant smokers who receive quit4Baby + text4Baby will demonstrate higher levels of knowledge about the dangers of second hand smoke and the benefits of smoking cessation for mothers and their infants than text4baby only users.

Hypothesis 2: Pregnant smokers who receive quit4baby + text4baby will report significantly higher rates of calling a quit line, discussions with their health provider and/or use of cessation counseling than those who receive Text4baby alone.

Hypothesis 3: Pregnant smokers who receive quit4baby + text4baby will have significantly more favorable quitting outcomes compared with text4baby alone.


Options:
A: Inclusion Criteria:

1. Subscribe to the text4baby test messaging program
2. Pregnant
3. Smoke or recently quit (within last 2 weeks)- Smoking will be defined as self-report of smoking at least one cigarette in the past 7 days. Given that these individuals are recruited from text4baby users, we are confident that they will have cell phones and text messaging capacity.
4. Speak English
5. Willing to enroll in our study
6. 14 years old or older

Exclusion Criteria:

1. No longer subscribe to text4baby
2. Not pregnant
3. Not current smoker (within past 2 weeks)
4. Non-English speakers
5. Not willing to receive Quit4Baby messages or enroll in study
6. Younger than 14 years of age
B: Inclusion Criteria:

Mother-child (or caregiver-child) units with child \<2 years of age OR Pregnant women

Exclusion Criteria:

Family does not have cell-phone OR cannot provide informed consent
C: Inclusion Criteria:

* Married
* Pregnant women with gestational age up to 20 weeks
* 15-44 years old throughout duration of study
* Literate
* Access to a cellphone
* Living in the study's catchment area

Exclusion Criteria:

* Not up to 20 weeks pregnant
* Not between 15-44 years old for the study duration
* Illiterate
* Does not have regular access to a cellphone
* Not residing within the catchment area
* Does not provide consent to participate
D: Inclusion Criteria:

* Caregiver of infant aged 6-8 months at time of enrollment
* Self-reported resident of one of the study villages; where the definition of a resident is defined by caregiver
* Willing to sign informed consent for the study

Exclusion Criteria:

* Child of enrolled caregiver has already received one dose of measles vaccine, not including any supplemental measles vaccines
* Caregiver plans to move away in the next 6 months

Answer: A