by Jean Roth, jroth@nber.org, 2003-08-18 SIPP 2001 Core Data Files Reference Dates wave srotaton srefmon rhcalmn rhcalyr n 1 1 1 October 2000 22804 1 1 2 November 2000 22834 1 1 3 December 2000 22850 1 1 4 January 2001 22870 1 2 1 November 2000 22573 1 2 2 December 2000 22608 1 2 3 January 2001 22634 1 2 4 February 2001 22657 1 3 1 December 2000 22387 1 3 2 January 2001 22415 1 3 3 February 2001 22440 1 3 4 March 2001 22469 1 4 1 January 2001 22341 1 4 2 February 2001 22366 1 4 3 March 2001 22386 1 4 4 April 2001 22412 2 1 1 February 2001 17956 2 1 2 March 2001 17978 2 1 3 April 2001 18022 2 1 4 May 2001 18109 2 2 1 March 2001 18024 2 2 2 April 2001 18047 2 2 3 May 2001 18124 2 2 4 June 2001 18175 2 3 1 April 2001 17931 2 3 2 May 2001 17976 2 3 3 June 2001 18050 2 3 4 July 2001 18111 2 4 1 May 2001 18103 2 4 2 June 2001 18158 2 4 3 July 2001 18224 2 4 4 August 2001 18312 3 1 1 June 2001 17645 3 1 2 July 2001 17697 3 1 3 August 2001 17751 3 1 4 September 2001 17818 3 2 1 July 2001 17759 3 2 2 August 2001 17785 3 2 3 September 2001 17816 3 2 4 October 2001 17854 3 3 1 August 2001 17572 3 3 2 September 2001 17585 3 3 3 October 2001 17631 3 3 4 November 2001 17691 3 4 1 September 2001 17797 3 4 2 October 2001 17821 3 4 3 November 2001 17852 3 4 4 December 2001 17917 4 1 1 October 2001 17643 4 1 2 November 2001 17619 4 1 3 December 2001 17641 4 1 4 January 2002 17650 4 2 1 November 2001 17644 4 2 2 December 2001 17657 4 2 3 January 2002 17662 4 2 4 February 2002 17679 4 3 1 December 2001 17555 4 3 2 January 2002 17577 4 3 3 February 2002 17576 4 3 4 March 2002 17580 4 4 1 January 2002 17618 4 4 2 February 2002 17628 4 4 3 March 2002 17647 4 4 4 April 2002 17686 5 1 1 February 2002 17300 5 1 2 March 2002 17309 5 1 3 April 2002 17332 5 1 4 May 2002 17357 5 2 1 March 2002 17556 5 2 2 April 2002 17506 5 2 3 May 2002 17512 5 2 4 June 2002 17535 5 3 1 April 2002 17040 5 3 2 May 2002 17011 5 3 3 June 2002 17030 5 3 4 July 2002 17040 5 4 1 May 2002 17398 5 4 2 June 2002 17414 5 4 3 July 2002 17426 5 4 4 August 2002 17481