Parameter/predictor

Intervention (Received SMS)

n = 157 (%)

Control (No SMS)

n = 157 (%)

Social demographic characteristics

Age, mean (range), completed years

15 - 24

25 - 34

35 - 44

45 - 54

55+

Marital status

Single

Married

Widowed

Separated

Education level

No formal education

Primary education

Secondary education (Partially)

Secondary education

Post-secondary (Certificate)

Diploma

Higher education

Occupational status

Self employed

Casual employment

Permanent employed by government

Permanent employed by private

37.4 (21 - 61)

5 (3.2)

66 (42.0)

50 (31.8)

21 (13.4)

15 (9.6)

6 (3.8)

148 (94.3)

0 (0)

3 (1.9)

4 (2.5)

39 (24.8)

48 (30.6)

24 (15.3)

15 (9.6)

18 (11.5)

9 (5.7)

48 (30.6)

60 (38.2)

46 (29.3)

3 (1.9)

32.1 (18 - 58)

33 (21.0)

72 (45.9)

32 (20.4)

13 (8.3)

7 (4.4)

17 (10.8)

131 (83.5)

3 (1.9)

6 (3.8)

8 (5.1)

82 (52.2)

30 (19.2)

19 (12.1)

6 (3.8)

9 (5.7)

3 (1.9)

98 (62.4)

41 (26.1)

15 (9.6)

3 (1.9)