While this represented a significant gain for black students, the improvement did not translate into a statistically significant narrowing of the achievement gap with white students. (doe.virginia.gov)
As such, over the period 2000 to 2011, there was a small but statistically significant narrowing of the birth weight gap in this period as set out in Table 3. (humanrights.gov.au)
Rabbits that underwent angioplasty alone experienced significant narrowing of the artery. (uchospitals.edu)