Hi Mike,
You are on to something. Broken-down by subject group, OMs accounted for the following percentages of total backs in my 2003-2006 survey:
150/350 = 1.2
350-only = 1.7
350/460 RP = 4.2
460-only = 2.8
Scot
Last edited by sreader3; 12-28-2012 at 08:06 AM.
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