SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934

                               (Amendment No. 1)*

                            ERESEARCHTECHNOLOGY, INC.
                  ( FORMERLY PREMIER RESEARCH WORLDWIDE, LTD.)
                                (Name of Issuer)

                                  Common Stock
                         (Title of Class of Securities)

                                   29481V 10 8
                                 (CUSIP Number)


                                 Howard D. Ross
                                LLR Capital, LLC
                             Two Greenville Crossing
                          4005 Kennett Pike, Suite 220
                              Greenville, DE 19807
                                 (302-661-1864)
            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)


                                 April 30, 2002
                          (Date of Event which Requires
                            Filing of this Statement)



If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-l(b)(3) or (4), check the following box [ ].

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).




                       (Continued on the following pages)
                                     Page 1





CUSIP NO.         29481V 10 8

1)       Name of Reporting Person
         S.S. or I.R.S. Identification Nos. of Above Person

         LLR Equity Partners, L.P.

2)       Check the Appropriate Box if a Member of a Group (See Instructions)

                                                                       (a) [  ]
                                                                       (b) [  ]

3)       SEC Use Only

4)       Source of Funds (See Instructions)

                           BK and OO

5)       Check if Disclosure of Legal Proceedings is
                        Required Pursuant to Items 2(d) or 2(e)            [  ]

6)     Citizenship or Place of Organization

                  State of Delaware

Number of Shares  (7)      Sole Voting Power                  833,468
Beneficially
Owned By Each     (8)      Shared Voting Power                Zero
Reporting
Person            (9)      Sole Dispositive Power             833,468
With
                 (10)      Shared Dispositive Power           Zero

11)      Aggregate Amount Beneficially Owned by Each Reporting Person

                           833,468
-------------------------------------------------------------------------------
12)      Check if the Aggregate Amount in Row (11) Excludes Certain Shares
         (See Instructions) [  ]

13)      Percent of Class Represented by Amount in Row (11)

                            12.0%

14)      Type of Reporting Person (See Instructions)

                            PN


                                       2


         The Statement on Schedule 13-D dated January 10, 2000 (the "Schedule
13-D") is hereby amended as follows:

Item 2 - Identity and Background

         Item 2 of Schedule 13-D is hereby amended to reflect that the Reporting
Person's address has changed to c/o LLR Capital, L.P., Two Greenville Crossing,
4005 Kennett Pike, Suite 220, Greenville, Delaware 19807.

Item 5- Interest in Securities of the Issuer.

         Item 5 of the Schedule 13-D is hereby amended to read in its entirety
as follows:

         The Reporting Person owns 833,468 shares of the Common Stock,
representing 12.0% of the outstanding Common Stock (such percentage being based
upon the outstanding shares as indicated in Issuer's most recent available
filing with the Securities and Exchange Commission). The 833,468 shares include
20,000 shares issuable upon the exercise of outstanding stock options. The
Reporting Person possesses the sole power to vote or to direct the vote and to
dispose or to direct the disposition of all shares of Common Stock owned by it.

         The Reporting Person sold, in a private transaction, 103,200 shares of
the Common Stock at $17.30 per share on April 30, 2002.

         No persons, other than LLR Equity Partners, L.P., has the right to
receive or the power to direct the receipt of dividends from, or the proceeds
from the sale of, the shares of Common Stock beneficially owned thereby.

          After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.


Dated: May 10, 2002            LLR EQUITY PARTNERS, L.P.

                               By:  LLR CAPITAL, L.P., its general partner
                                     By: LLR CAPITAL, LLC, its general partner

                                          /s/ Howard D. Ross
                                          -------------------------------------
                                          Howard D. Ross, President