Table 1: The total number of research-persons by phase of collecting and entry for the main regionsSee also the numbers for the Netherlands, or go back to the state of affairs.
|Provinces of Friesland, Utrecht and Zeeland and the city of Rotterdam*||1850-1862||1863-1922||Total birth period 1850-1922|
|N||% of total||N||% of total||1 Sept 2006||1 Jan 2005||1 Sept 2004|
|Total number of research-persons||2544||10125||12669|
|1. Data-collection 1: persons followed in region of birth||2544||100.0||10125||100.0||12669||100.0||100.0||100.0|
|2. Data-collection 2: a.o. migration trajectories||2544||100.0||10125||100.0||12669||100.0||100.0||95.8|
|3. Data entry||2100||82.5||9000||88.9||11100||87.6||73.2||56.8|
|4. Checking of data entry||2028||79.7||8216||81.1||10244||80.9||52.0||46.0|
|5. Finished: number of marriage-certificates||930||a59.9||4472||c56.8||5402||d57.3||51.9||51.9|
|6. Finished: Life courses (population register)||1800||70.8||6720||66.4||8520||67.3||43.9||37.1|
Explanation: the numbers of phase 3, 4 and 6 are estimations and not exact counts.
a Calculation was based on the total amount of 1552 expected marriage-certificates.
c Calculation was based on the total amount of 5548 expected marriage-certificates.
d Calculation was based on the total amount of 9429 expected marriage-certificates.
*Rotterdam includes the surrounding villages