Findings -Observation Period-  Hypothesis  A HG rate is NOT sustainable for firms (They go through a HG period but then plateau until the next HG period)  Recommendation  HG should be measured within a 3 yr window  Given that HG rate varies greatly by size class (6% HG rate for size class 5-9 and 3% for size class 100-249) it is essential to produce HG rates by size class  Using an overall HG rate will distort international comparisons as the proportion of large firms in countries varies greatly
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