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Table 1 Study Characteristics by Reported SAB and by Work in the Flower Industry in the Previous Six Years (n = 153), Ecuador, 2003

From: Employment in the Ecuadorian cut-flower industry and the risk of spontaneous abortion

Study Characteristics Reported History of SAB Worked in the flower industry
  No (n = 123) Yes (n = 30) No (n = 67) Yes (n = 86)
Mother's Age (mean, SD) 29.2 (6.8) 28.5 (6.7) 31.6 (7.9) 27.1 (4.9)*
  N (%)    
Mother's Age     
   ≤ 25 years 42 (34.1) 14 (46.7) 20 (29.9) 36 (41.9)
   > 25 years 81 (65.9) 16 (53.3) 47 (70.1) 50 (58.1)
Mother's Age     
   < 30 years 76 (61.8) 18 (60.0) 32 (47.8) 62 (72.1)*
   ≥ 30 years 47 (38.2) 12 (40.0) 35 (52.2) 24 (27.9)
Ethnicity of Mother     
   Indigenous 90 (74.4) 26 (86.7) 56 (84.9) 60 (70.6)*
   Mestizo/White 31 (25.6)
missing = 2
4 (13.3) 10 (15.1)
missing = 2
25 (29.4)
Marital Status     
   Married 80 (65.0) 23 (76.7) 47 (70.2) 56 (65.1)
   Free Union 30 (24.4) 4 (13.3) 12 (17.9) 22 (25.6)
   Single/Separated/Widowed 13 (10.6) 3 (10.0) 8 (11.9) 8 (9.3)
Mother's Education Level     
   None or partial primary 43 (35.0) 8 (26.7) 28 (41.8) 23 (26.7)
   Completed primary school 66 (53.7) 17 (56.7) 31 (46.3) 52 (60.5)
   Partial or completed high school 14 (11.3) 5 (16.7) 8 (11.9) 11 (12.8)
Monthly Household Income     
   $0-150 60 (49.2) 9 (30.0) 40 (60.6) 29 (33.7)*
   $151-250 36 (29.5) 10 (33.3) 16 (24.2) 30 (34.9)
   > $250 26 (21.3)
missing = 1
11 (36.7) 10 (15.2)
missing = 1
27 (31.4)
Reproductive History     
Total Births (mean, SD) 3.8 (2.1) 3.1 (2.3) 4.4 (2.5) 3.0 (1.6)*
Live births (mean, SD) 3.7 (2.1) 3.0 (2.3)** 4.4 (2.5) 3.0 (1.5)*
Gravidity (mean, SD) 3.7 (2.1) 4.1 (2.4) 4.5 (2.6) 3.3 (1.5)*
Gravidity: N (%)    
   2+ pregnancies & no history of SAB -- -- 59 (88.1) 64 (74.4)*
   2+ pregnancies & history of SAB -- -- 8 (11.9) 22 (25.6)
  1. * p ≤ 0.05, ** p < 0.10