Hospital Survey on Patient Safety Culture: User's Guide--Table 2. Example of Composite Frequency Matrix

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Items in "Overall Perceptions of Safety"	1. For positively worded items, count the number of "Strongly Agree" or "Agree" responses.	2. For reverse worded items, count the number of "Strongly Disagree" or "Disagree" responses.	3. Total number of "positive" responses	4. Total number of responses to the item (excluding missing responses)
Item A15—positively worded "Patient safety is never sacrificed to get more work done."	120	NA*	120	260
Item A18—positively worded "Our procedures and systems are good at preventing errors from happening."	130	NA*	130	250
Item A10—reverse worded "It is just by chance that more serious mistakes don't happen around here."	NA*	110	110	240
Item A17——reverse worded "We have patient safety problems in this unit."	NA*	140	140	250
Totals:			500	1,000

*Not Applicable