Variations in Institutional Review Board Approval in the Implementation of an Improvement Research Study

Table 2

Study start-up times (in business days).

	Days to submission	Days to approval	Days to study start
All hospitals	45.1±31.8	14±5.7	29.9±10.1
Academic IRB	24.0±22.0	16.3±10.6	22.75±10.2
Hospital-based IRB	54.1±32.2	13.7±2.8	32.7±9.1