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Table 1 Sample distribution and reported intensity of menstruation according to socio-demographic and behavioral characteristics

From: Menstrual bleeding patterns: A community-based cross-sectional study among women aged 18-45 years in Southern Brazil

  

Reported intensity menstrual flow

Variable

N (%)

Heavy

Normal

Light

p

  

304 (35.3)

340 (39.4)

218 (25.3)

 

Age (years)

    

<0.001

18-24

204 (23.6)

68 (33.3)

100 (49.0)

36 (17.6)

 

25-29

159 (18.4)

36 (22.8)

70 (44.3)

52 (32.9)

 

30-34

171 (19.8)

57 (33.3)

67 (39.2)

47 (27.5)

 

35-39

149 (17.2)

61 (41.2)

46 (31.1)

41 (27.7)

 

40-45

182 (21.0)

82 (45.3)

57 (31.5)

42 (23.2)

 

Skin color

    

0.2

White

641 (74.1)

218 (34.1)

250 (39.1)

171 (26.8)

 

Black/mixed

224 (25.9)

86 (38.6)

90 (40.4)

47 (21.1)

 

Marital status

    

0.2

Married/with a partner

625 (72.3)

218 (35.0)

240 (38.5)

165 (26.5)

 

Single

155 (17.9)

48 (31.0)

70 (45.2)

37 (23.9)

 

Divorced, widowed

84 (9.7)

38 (45.2)

30 (35.7)

16 (19.0)

 

Income (MW)1

    

0.5

≤ 1

181 (21.0)

69 (38.3)

66 (36.7)

45 (25.0)

 

1.01-2.0

355 (41.1)

130 (36.7)

145 (41.0)

79 (22.3)

 

2.01-3.0

168 (19.5)

55 (32.7)

63 (37.5)

50 (29.8)

 

> 3

159 (18.4)

50 (31.4)

65 (40.9)

44 (27.7)

 

Education level (years)

    

0.001

0-4

179 (20.7)

72 (40.2)

60 (33.5)

47 (26.3)

 

5-8

394 (45.6)

153 (38.9)

137 (34.9)

103 (26.2)

 

≥9

291 (33.7)

79 (27.2)

143 (49.3)

68 (23.4)

 

Weekly alcohol consumption

    

0.1

No

773 (89.5)

277 (35.9)

307 (39.8)

187 (24.3)

 

Yes

91 (10.5)

27 (29.7)

33 (36.3)

31 (34.1)

 

Smoking

    

0.1

No

409 (47.3)

134 (32.8)

180 (44.1)

94 (23.0)

 

Former smoker

172 (19.9)

63 (36.6)

59 (34.3)

50 (29.1)

 

Yes

283 (32.8)

107 (37.9)

101 (35.8)

74 (26.2)

 

Caffeine consumption (mg/day)

    

0.7

0-100

201 (23.3)

68 (34.0)

81 (40.5)

51 (25.5)

 

100.1-200.0

272 (31.5)

88 (32.4)

107 (39.3)

77 (28.3)

 

200.1-300.0

163 (18.9)

59 (36.4)

65 (40.1)

38 (23.5)

 

> 300

228 (26.4)

89 (39.0)

87 (38.2)

52 (22.8)

 

History of anemia

    

0.05

No

265 (30.7)

86 (32.6)

97 (36.7)

81 (30.7)

 

Yes

599 (69.3)

218 (36.5)

234 (40.3)

137 (22.9)

 

BMI2

    

0.008

≤ 24.9

461 (53.7)

156 (33.9)

192 (41.7)

112 (24.3)

 

25.0-29.9

237 (27.6)

74 (31.2)

102 (43.0)

61 (25.7)

 

≥ 30.0

161 (18.7)

73 (45.6)

44 (27.5)

43 (26.9)

 
  1. 1MW = Minimum Wages; 2BMI: Body Mass Index;