Table 2 Characteristics of included studies on digital health interventions for type 2 diabetes.

From: Clinical efficacy and cost-effectiveness analysis of mobile health interventions in diabetes care: a systematic review and meta-analysis

Authors

Country

Population

Intervention

Study design

Sample size

Groups (N)

Follow up duration

Mean age

(I)

(C)

(I)

(C)

Warren et al.26

Australia

DM-T2

Intervention groups used telehealth technologies such as vital sign monitoring software and video conferencing software

Prospective RCT

126

63

63

6 Months

61.3

61.3

Fottrell et al.21

Bangladesh

DM-T2

As part of mhealth, intervention groups received twice-weekly audio messages about health behavior and awareness-raising

Cluster- RCT

125,000

3798 (PLA)

3812 (mHealth)

3829

18 Months

34.5 (PLA)

34.5 (mHealth)

34.5

Li et al.23

China

DM-T2

A mobile-based intervention provides intervention groups with an app which have features such as medication reminders and blood glucose monitoring

RCT

Cost-effectiveness analysis (CEA)

215

130

85

12 Months

47.5

46.7

Katalenich et al.25

United States of America

Non-specific

The intervention group used the Diabetes Remote Monitoring and Management method (DRMS), which contacts patients to remind them to check their blood sugar levels and use an automated method to transmit the results.

RCT

98

50

48

6 Months

59

59

Fritzen et al.27

Europe (France, Germany, Italy, Spain, United Kingdom)

DM-T2

A glucose meter with Continuous Glucose Monitoring (CGM) (OneTouch Verio Flex) and a smartphone app (OneTouch Reveal) for diabetes self-management were used as part of the intervention

RCT

49

24

25

6 Months

44

45.1

Abaza and Marschollek. 2017

Egypt

Non-specific

Each intervention patient received 84 educational and 12 reminder messages plus one welcome message over 3 months

RCT

73

34

39

3 Months

51.24

51.77

Kleinman et al. 2015

India (Ahmedabad, Chennai and Mumbai)

DM-T2

The mHealth app and a mobile phone plan stipend were given to intervention participants.

RCT

90

45

45

6 Months

48.8

48.0

Fortmann et al. 2017

Spain

DM-T2

Instructions on how to send and receive text messages were given to the participants

RCT

126

63

63

6 Months

47.8

49.1

Di Bartolo et al. 2017

Italy

DM-T1

The telemedicine system (iBGStar™ + DMApp) (iBGStar) and experimental glucose meter were given to the intervention group

A multicenter, open-label, randomised trial

182

92

90

6 Months

17.6 ± 3.1

17.8 ± 3.0

Berndt et al. 2014

Germany

DM-T1

The intervention group made use of a telemedical diabetes management technology called “Mobil Diab”

RCT

68

34

34

4 Weeks

12.9 ± 2.0

13.2 ± 2.9