Table 1 The distribution of message content according to topic during the intervention [49]

Before the quit day (Having a plan of action)

Controlling the stimulus for smoking

1

Having a plan of action

2

Suggesting the healthy behavior

1

Things to do before the quit day

2

Individual support from others

1

Total

7 (Daily)

After the quit day (Preventing relapse)

Importance of self-rewarding

4

Strategies to cope with nicotine withdrawal

13

Coping with stimuli for smoking

13

Changing the environment

10

Preventing relapse

13

Total

53 (First month, daily; Second month, every other day; Third month, every 3 days)