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Table 1 Demographic characteristics of mothers and prevalence of prenatal exposures

From: Particular characteristics of allergic symptoms in tropical environments: follow up to 24 months in the FRAAT birth cohort study

   Baseline 24 months (n = 274)
Factor   (n = 326) non wheezers
(n = 169)
wheezers
(n = 105)
Maternal age at child birth [n (%)]     
  14-18 80 (24.5) 39 (23.1) 27 (25.7)
  19-24 139 (42.6) 68 (40.2) 50 (47.6)
  25-30 67 (20.6) 36 (21.3) 19 (18.1)
  31-35 22 (6.7) 15 (8.9) 5 (4.8)
  36-42 18 (5.5) 11 (6.5) 4 (3.8)
Maternal age (Mean ± SD)   23.2 ± 5.83 23.6 ± 6.15 22.5 ± 5.37
Maternal education     
  None 5 (1.5) 2 (1.2) 2 (1.9)
  Primary school only 57 (17.4) 28 (16.5) 15 (14.3)
  High school incomplete 142 (43.6) 69 (40.8) 48 (45.7)
  High school complete 72 (22.1) 42 (24.9) 23 (21.9)
  Technical studies 46 (14.1) 26 (15.4) 15 (14.3)
  University 4 (1.2) 2 (1.2) 2 (1.9)
Parity Primipara 134 (41.1) 73 (43.2) 41 (39.0)
No. of other children (Mean ± SD)   1.17 ± 1.35 1.14 ± 1.32 1.19 ± 1.31
Socioeconomic stratum     
  1 (poorest) 257 (78.8) 135 (79.9) 79 (75.2)
  2 59 (18.1) 29 (17.2) 22 (21.0)
  3 10 (3.1) 5 (3.0) 4 (3.8)
Type of house     
  Brick 243 (74.5) 127 (75.1) 79 (75.2)
  Wood 83 (25.5) 42 (24.9) 26 (24.8)
Type of house floor     
  Tile 90 (27.6) 49 (29.0) 28 (26.7)
  Bare concrete 172 (52.7) 87 (51.5) 58 (55.2)
  Soil 64 (19.6) 33 (19.5) 19 (18.1)
Tap water Yes 290 (89) 147 (87.0) 95 (90.5)
Sewage system Yes 191 (58.6) 101 (59.8) 61 (58.1)
Exposure to pests at home*     
  Cockroaches 255 (78.2) 137 (81.1) 80 (76.2)
  Rodents (mice, rats) 275 (84.4) 139 (82.2) 92 (87.6)
Smoking and contaminants during pregnancy     
  Maternal smoking (ever) 16 (4.9) 9 (5.3) 3 (2.9)
  Maternal smoking during pregnancy 8 (2.5) 5 (3.0) 2 (1.9)
  Intradomiciliary passive exposure 142 (43.6) 67 (39.6) 48 (45.7)
Type of domestic cooking fuel     
  Wood/Coal 39 (12) 19 (11.2) 13 (12.4)
  Propane 69 (21.2) 36 (21.3) 20 (19.0)
  Natural Gas 244 (74.8) 124 (73.3) 82 (78.0)
  Electricity 3 (0.9) 2 (1.18) 1 (0.96)
Trash burning at home during pregnancy Yes 65 (19.9) 34 (20.1) 22 (21.0)
Passive exposure to trash fume at neighborhood Yes 172 (52.8) 88 (52.1) 60 (57.1)
Exposure to pets and to other domestic animals     
  Living with pet during pregnancy 157 (48.2) 82 (48.5) 52 (49.5)
  Dog during pregnancy 143 (43.9) 77 (45.6) 48 (45.7)
  Cat during pregnancy 41 (12.6) 23 (13.6) 10 (9.5)
Living with dog/cat during the whole pregnancy Yes 107 (32.8) 55 (32.5) 37 (35.2)
Intradomiciliary contact poultry/pigs during pregnancy Yes 44 (13.5) 20 (11.8) 17 (16.2)
Antibiotics during pregnancy     
  Yes 159 (48.7)** 80 (47.3) 57 (54.2)
  None 157 (48.1) 84 (49.7) 46 (43.8)
  Missing/no remember 10 (3.06) 5 (2.95) 2 (1.90)
  1. * As identified by the families by sightseeing and employing active methods of eradication
  2. ** The most frequent cause was urinary tract infection. The most frequent antibiotics were ampicillin (32%), cephalosporin (11.9%), amoxicillin (10.6%) and metronidazole (9.4%).
  3. SD: Standard deviation
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