Table 1 Comparison of the “pre-NHSP implementation” and “post-NHSP implementation” cohorts by demographic and obstetric characteristics

Female

47%

46.2%

p = .841

Jews and others^b

77.7%

66.8%

p = 0.0002

Arabs

22.3%

33%

p < 0.0005

Mean birthweight (grams)

2964

2936

p = .627

Mean gestational age (weeks)

38.2

38.0

p = .334

Extremely preterm (< 28 weeks)

2.2%

2.5%

p = .578

Moderately preterm (28-36 weeks)

14.5%

17%

p = .679

Unilateral

n = 54

n = 21

 Mild

1%

0

 Moderate

6%

2%

 Profound

6%

3%

Bilateral

n = 343

n = 243

 Mild

7%

10%

 Moderate

29%

28%

 Profound

43%

50%