The Witness Box

Commenting on expert evidence, economic damages, and interesting developments in injury, wrongful death, business torts, discrimination, and wage and hour lawsuits

Wednesday, October 15, 2008

Survey adminstration

Is the bar too high for survey evidence in wage and hour cases?

Here are the details of how the survey was conducted:

SAMPLE

A list of 614 cases was provided. This list was checked for duplicate phone numbers and valid area codes and 64 cases were thrown out. Of the 550 remaining numbers, 166 were unusable, leaving 384 viable phone numbers. The remaining 384 cases we dialed up to 5 attempts in an effort to complete the questionnaire with as many as possible.

INTERVIEWING·
Interviewing took place between the dates of November 18th and November 24",2004. Calling times were scheduled from 6:00-9:00 PST weekdays, 9:00 am-4:00 pm PST on Saturday and 2:00-8:00 PST Sunday.

Interviewing took place at various times during these calling windows. Daytime dialing also occurred on the 220d and 23'd of November.

Interviewing was completed following sound, standard marketing research call center practices Including reading verbatim and administering the interview in a non-biased fashion. 20% of completed interviewers were silently monitored (10% is industry standard). 13% of respondents were called back to confirm qualification and study participation (10% is industry standard).

Supervision ratio was 1 hour for every 3.5 interviewing hours. Industry average is approximately 1:8.
A total of 7 Intervij1wers were briefed and dialed on this study at some time during its 7days in field ranging from 1to 5 during any given shift.

QUESTIONAIRE·

Aquestionnaire wjth 42 yes/no/na questions was provided to ORI, atrue and correct copy of which Is attached hereto ap Exhibit 1. This questionnaire was programmed Into CATI (computer assisted telephone interviewing) software commonly used within the industry to administer telephone interviews. In addition to providing the script and capturing data the software also regulates the phone numbers to be called in reference to callbacks times, resolved vs. non resolved numbers, etc.

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