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Table 1 Social demographic characteristics of the participants (N = 450)

From: Improving pregnant women’s knowledge on danger signs and birth preparedness practices using an interactive mobile messaging alert system in Dodoma region, Tanzania: a controlled quasi experimental study

Variable

Intervention

Control

Total/out of 450

n

%

n

%

n

%

Age

  < 20 yrs

21

14.0

61

20.3

82

18.2

 20–34 yrs.

111

74.0

212

70.7

323

71.8

  ≥ 35 yrs

18

12.0

27

9.0

45

10.0

Education status

 Primary school

82

54.7

182

60.7

264

58.7

 Secondary school

52

34.7

95

31.7

147

32.7

 College/University

16

10.6

23

7.6

39

8.6

Occupational status

 Non-employed

54

36.0

90

30.0

144

32.0

 Self-employed

92

61.3

206

68.7

298

66.2

 Employed

4

2.7

4

1.3

8

1.8

Marital status

 Not married

25

16.7

72

24.0

97

21.6

 Married

125

83.3

228

76.0

353

78.4

Obstetric characteristics of participants

 Gravidity

  1

33

22.0

64

21.3

97

21.6

  2–4

109

72.7

217

72.3

326

72.4

   ≥ 5

8

5.3

19

6.4

27

6.0

 Parity

  1

37

24.7

84

28.0

121

26.9

  2–4

107

71.3

202

67.3

309

68.7

   ≥ 5

6

4.0

14

4.7

20

4.4

Gestation age at delivery in weeks

  < 37 weeks

17

11.3

38

12.7

55

12.2

 37–40 weeks

116

77.4

241

80.3

357

79.4

  ≥ 40 weeks

17

11.3

21

7.0

38

8.4

Gestation age at first visit in weeks

 1–12 weeks

56

37.3

136

45.3

192

42.7

 13–20 weeks

94

62.7

164

54.7

258

57.3

Age at first pregnancy in years

  < 20 yrs

58

38.7

156

52.0

214

47.4

 20–34 yrs

90

60.0

143

47.7

234

52.0

  ≥ 35 yrs

2

1.3

1

0.3

3

0.6

Total number of antenatal care visits

 1–3 visits

14

9.3

72

24.0

86

19.1

  ≥ 4 visits

136

90.7

228

76.0

364

80.9