Table 3.

Cost-effectiveness analysis by study groups and attendance rate

Characteristics	SMS	Telephone
Show, No.	538	542
Intervention, No.	615	649
Time spent for intervention (h)	6.05	10.82
Research assistant salary per hour (Yuan)	11.92	11.92
Telecommunication cost (Yuan)	92.25	129.80
Total costs incurred (Yuan)	164.37	258.77
Total cost per patient (Yuan)	0.27	0.42
Total cost per attendance (Yuan)	0.31	0.48
Ratio of cost per attendance (success)	0.65	1.00