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Table 1 Characteristics of excluded studies

From: Neonatal prophylaxis with antibiotic containing ointments does not reduce incidence of chlamydial conjunctivitis in newborns

Study, year, location, ref. # Prospective Was study comparative? Ocular prophylaxis Preparations Prenatal screening for C. trachomatis Number of Infants Infants followed prospectively Only Infants with conjunctivitis tested for C. trachomatis All infants seen prospectively, and tested for C. trachomatis in eye and NP
1. Laga (1988) [15], Kenya Yes Yes Silver nitrate Tetracycline No* 1233
1499
Yes Yes Yes
2. Chen (1992) [16], Taiwan Yes Yes Silver nitrate Tetracycline
Erythromycin
No prophylaxis
Erythromycin twice
No 1082
1156
1163
1143
425
No No No
3. Rours (2006) [17], South Africa Yes No# Tetracycline Yes 77 Yes Yes Yes
4. Ali (2007) [18], Iran Yes Yes Betadine
Erythromycin
No prophylaxis
No 110
110
110
Yes Yes No
5. Matinzadeh (2007) [19], Iran Yes Yes Erythromycin
No prophylaxis
Normal saline
No 320
337
335
Yes Yes Yes
6. Ramirez-Ortiz (2007) [20], Mexico Yes Yes Povidone-iodine vs. chloramphenicol No 2004 Yes Yes Yes
7. David (2011) [21], Israel Yes No Povidone iodine vs. tetracycline No 394 Yes Yes No
8. Alexandre (2015) [22], Angola No No Povidone-iodine vs. no prophylaxis No 317 No No No
  1. * Women identified intrapartum, results not available at delivery. # No comparative arm
  2. 1% silver nitrate drops
  3. 1% tetracycline ophthalmic ointment
  4. 0.5% erythromycin ophthalmic ointment
  5. 2.5% povidone-iodine drops