All the studies were published during 2010-2022. Table 2 shows that most studies were quantitative studies and most were conducted in Asia, European Countries, the United States of America and the rest from Africa, the Middle East, the United Kingdom and in the South Pacific. Of the total of 48 studies, 21 studies were conducted in Asia/Southern Asia and Western Asia (3 in Thailand, 5 in Saudi Arabia, 4 in China, 2 in Hong Kong, 2 in Malaysia, 1 in India and 2 in Iran, 1 Korea, 1 in Japan and 1 in Taiwan). Seven studies were conducted in the United States of America/Southern, Northern and eastern (1 in the United States, 1 in Southern California, 1 in Hawaii, 1 in Columbia, 1 in Midland, 1 in Washington and 1 in Brazil). Nine studies were conducted in Europe (2 in Germany, 2 in Finland and one each in Switzerland, London, Netherlands, Sweden and Poland). Four studies were conducted in Africa (one each in Kenya, Nigeria, Malawi and South Africa), three studies in the United Kingdom and three from the Pacific Islands (2 in Australia and 1 in Fiji). From these 48 studies, the factors were identified to be related to the shortage of nursing workforce and were summarized and categorized into 4 themes: Policy and planning Barriers, Barriers to Training and enrolment, Factors causing staff turnover and Issues that affect nurses and patient healthrelated outcomes.- what type of statistics were utilized here