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Table 1 Characteristics of the participants: absolute and relative for both sample and (weighted) population

From: Sickle cell trait in São Tomé e Príncipe: a population-based prevalence study in women of reproductive age

Variable

Group

N

Proportion (Sample)

Proportion (Weighted, 95% CI)

Age

15–19

29

7.71%

5.48% (2.48-10.00)

20–24

54

14.36%

16.40%(12.80–21.00)

25–29

60

15.96%

14.90% (9.60–22.00)

30–34

77

20.48%

19.30% (14.10–25.00)

35–40

65

17.29%

17.70% (13.60–22.00)

40–44

42

11.17%

12.39% (8.58-17.00)

40–49

49

13.03%

13.80% (10.30–18.00)

Civil Status

Single

311

82.71%

85.30% (79.20–90.00)

Married

63

16.75%

14.53% (9.58-21.00)

Other

2

0.53%

0.20% (0.03-1.00)

Nationality

São-Tomense

361

96.01%

96.40% (92.40–99.00)

Cape Verdean (double)

13

3.46%

3.00% (1.12-7.00)

Gabonese (double)

2

0.53%

0.44% (0.04-2.00)

Education

Knows how to read and write

352

93.62%

94.10% (90.00–97.00)

Only knows how to read

13

3.46%

2.99% (1.11-6.00)

Doesn’t know how to read or write

11

2.92%

2.88% (1.19-6.00)

Local dialect

None

101

26.86%

24.60% (19.20–31.00)

Only Forro

158

42.02%

47.90% (36.80–59.00)

Only Angolar

23

6.11%

4.08% (1.90-7.00)

Only Cape Verdean

41

10.90%

8.26% (4.00–15.00)

Other

53

14.10%

15.13% (9.96-22.00)

Past childbirths

Nulliparous (0)

55

14.63%

14.00% (11.0–17.00)

Primiparous (1)

58

15.42%

18.10% (12.00–26.00)

Multiparous (2–4)

205

54.52%

53.20% (45.90–60.00)

Grand multipara (> 4)

58

15.42%

14.70% (10.90–19.00)