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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;