Cultural integration issues were the second most important contributing factor to deal failure according to the document. The document also states that cultural integration is indirectly linked to other causes of deal failure such as delayed integration. Additionally, statistics show that up to one third of mergers fail within 5 years, and as many as 80% never live up to their full expectations. While successful cultural integration is critical for deal success, many companies do not have a specific approach for assessing and integrating culture during an acquisition. Reasons for unsuccessful cultural integration include a lack of leadership support, cultural risks not being identified, and a lack of competencies and skills.