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Table 2 Baseline characteristics and ear assessments between enrolment and randomisation (including day of enrolment and day of randomisation)

From: Compared to placebo, long-term antibiotics resolve otitis media with effusion (OME) and prevent acute otitis media with perforation (AOMwiP) in a high-risk population: A randomized controlled trial

  Amoxicillin Placebo
  N = 52 N = 51
Mean age (years) of mothers 24.5 (N = 52) 23.3 (N = 50)
Mean gestation (weeks) 38.3 (N = 43) 38.5 (N = 46)
Mean birth weight (gm) 2812 (N = 51) 3155 (N = 50)
Male 24 (46%) 30 (59%)
Enrolment to randomisation (inclusive)   
Mean age (mo) at enrolment 4.2 3.2
Mean duration to randomisation (months) 1.6 1.8
Number of study visits 155 166
Mean visits per child 2.5 2.6
Number (%) of examinations with the following worst ear status(enrolment to randomisation, inclusive)   
  N = 155 N = 166
Normal 18 (12%) 19 (11%)
Otitis media with effusion (OME) 83 (54%) 82 (49%)
Acute Otitis Media (AOM) without perforation (AOMwoP) 41 (26%) 44 (26%)
AOM with perforation (AOMwiP) 6 (4%) 10 (6%)
Dry perforation 1 1
Chronic Suppurative Otitis Media (CSOM) 0 2
Any suppurative OM† 47 (30%) 56 (34%)
Any perforation‡ 7 (5%) 13 (8%)
  1. AOMwoP, AOMwiP or CSOM;
  2. AOMwiP, dry perforation or CSOM