This read-only flag indicates whether the counters in this signal-quality table include codewords transmitted during contention intervals, and is always false for subscriber units since the flag only applies at the headend. Admins need to know this before comparing error-rate counters across devices, since including or excluding contention traffic changes what the counters actually represent. For example, an admin comparing cwdIfSigQUnerroreds between two headends should first confirm both have the same cwdIfSigQIncludesContention setting, or the comparison won't be apples-to-apples.