Table 3 Descriptive statistics of items and internal consistency measure of constructs

Intention

0.72

 I will use SMS in the future to have information about my pregnancy and newborn

3.99

 I believe I will use SMS in the future to have information about my pregnancy and newborn

4.15

 I think I would like to receive maternal and newborn health information through SMS frequently

3.82

 I am not willing to be contacted by my/my family mobile phone to get important health message

3.18

 I am willing to receive SMS about the service my baby and I can get from health facility

4

 I am not willing to receive reminder SMS about service that my baby and I can get from health facility

3.27

Perceived Usefulness

0.86

 Text messaging is a better way of getting important pregnancy and newborn related health messages

3.90

 I believe texting is convenient way of receiving maternal and newborn related health information for mothers

4.10

 I believe SMS based intervention can improve communication between pregnant mothers & health workers

4.10

 SMS based intervention will reduce the time pregnant mother spend to get routine education at health facility

3.75

 Using SMS based would improve the care I will give to my new-born

3.85

 I believe SMS based service reminder will help me not to miss service appointment date

4.07

 Using SMS based would make it easier to receive important health message about newborn and maternal health

3.92

Perceived easiness

0.87

 I would find it easy to read health messaged sent over SMS

3.87

 SMS based health messages are easy to use

3.99

 Learning to operate my/family phone to read message would be easy for me

3.98

 I would find SMS based intervention to be flexible to interact with

3.86

 I am comfortable using a mobile phone

3.89

Self-efficacy

0.93

 I am confident about my ability to read SMS sent to me

3.8

 I believe I can differentiate health information from other SMS that I receive though my phone

3.93

 I believe I can read and understand information if there is no one around to tell me what to do

3.85

 I feel very confident of reading health messages I receive through SMS

3.82

 I am confident that I can understand health messages I receive through SMS

3.85

 I believe I can manipulate my mobile to read health information even if I never have such experience before

3.8

Perceived acceptability

0.91

 I believe most mothers are interested in receiving maternal and newborn related education by text message

3.87

 I think I would like to use SMS as means of communication about maternal and newborn frequently

4.00

 Allowing text message communication between mothers & health worker is too complex and not worth the time

3.92

 I think most pregnant mothers would be interested in communicating by text about maternal and newborn health

3.90

 The current SMS based education approach can improve maternal and newborn health

4.00

 I believe SMS-based maternal education approach can effectively meets my need

3.95

 I believe SMS-based maternal education approach fits the target issue and settings

3.95

 I believe SMS-based maternal education is appropriate to address existing maternal & newborn health problem

3.98

 I would recommend using SMS based maternal education if it is to be implemented in the future

4.06

 Using texts is a good way to teach about maternal and newborn health

4.09

Perceived feasibility

0.9

 SMS based education and service reminder intervention seems practical in this setting

3.99

 I believe I will use SMS based maternal and newborn related education in the future

3.95

 SMS based education and service reminder intervention seems easy to implement in this community

3.99

 SMS based education and service reminder seems realistic

3.96

 SMS based education and service reminder intervention components seems implementable

3.97

 SMS based education and service reminder intervention seems possible

3.97