Table 4.

Metrics of migration

Metric	Average (months)	Range (months)
Time from migration decision to database specifications received	0.6	0.3–1.0
Time from database specifications received to data entry system ready	3.5	1.6–8.5
Time from data entry system ready to data validation checks ready	1.9	0–3.5
Time from data validation checks ready to reports ready	4.2	2.5–7.0
Total duration of system development	8.5	3.0–15.5
Months without reports	8.1	5.6–11.4
Time from database specifications received to all data received	3.6	2.3–4.6
Time from migrated data received to all migrated data entered	3.8	3.0–5.1
Time from last patient last visit to database lock	2.8	2.3–3.3