3.1. The percentage variation of COVID-19 confirmed cases
3.1.1. Low-income countries
Table 1 demonstrated that, among the four low-income countries (Afghanistan, Somalia, Syria, and Yemen), all countries reported increase number of confirmed cases and the percentage of increase in COVID-19 confirmed cases were range from 31.2% in Syria (the highest) to 9.8% in Somalia (the lowest); the rest of other countries were 17.1%, 22.6% for Afghanistan and Yemen respectively.
3.1.2. Lower-middle income countries
Table 2 demonstrated that, among the seven lower-middle income countries (Djibouti, Egypt, Morocco, Pakistan, Palestine, Sudan, and Tunisia), all countries reported increase number of confirmed cases except Tunisia, and the percentage of increase in COVID-19 confirmed cases were range from 27.2% in Pakistan to 0.0% in Tunisia; the rest of other countries were 21.8%, 8.2%, 5.5%, 4.9%, and 4.7% for Egypt, Sudan, Djibouti, Palestine, and Morocco respectively.
3.1.3. Upper-middle income countries
Table 3 demonstrated that, among the five upper-middle income countries (Iran, Iraq, Jordan, Lebanon, and Libya), all countries reported increase number of confirmed cases and the percentage of increase in COVID-19 confirmed cases were range from 53.5% in Libya to 6.2% Lebanon; the rest of other countries were 50.2%, 11.9%, 6.3% for Iraq, Jordan, and Iran respectively.
3.1.4. High-income countries
Table 4 demonstrated that, among the six high-income countries (Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, and United Arab Emirates), all countries reported increase number of confirmed cases and the percentage of increase in COVID-19 confirmed cases were range from 24.6% in Oman to 7.1% in United Arab Emirates; the rest of other countries were17.3%,15.6%, 11.7%, 10.6% for Saudi Arabia, Bahrain, Qatar, and Kuwait respectively.
3.2. The percentage variation number of deaths
3.2.1. Low-income countries
The results demonstrated that among the four low-income countries, two countries reported increase the percentage of COVID-19 number of deaths (Afghanistan, and Yemen); the percentage of variations range from 30.3% in Afghanistan, followed by Yemen 22.3% to 0.0% in Somalia and Syria (Table 1).
3.2.2. Lower-middle income countries
The results demonstrated that, among the seven lower-middle income countries, all countries reported increase the percentage of COVID-19 number of deaths except Tunisia and Palestine, the percentage of variations range from 42.3% in Djibouti to 0.0% in Tunisia and Palestine; the rest of other countries were 21.8% 14.9%, 11.7%, 1.4% for Pakistan, Egypt, Sudan, and Morocco respectively (Table 2).
3.2.3. Upper-middle income countries
The results demonstrated that, among the five upper-middle income countries, all countries reported increase the percentage of COVID-19 number of deaths except Jordan and Libya, the percentage of variations range from 43.7% in Iraq to 0.0% in Jordan and Libya; the rest of other countries were 6.9%, 4.6% for Lebanon and Iran respectively (Table 3).
3.2.4. High-income countries
The results demonstrated that among the six high income countries, all countries reported increase the percentage of COVID-19 number of deaths, the percentage of variations range from 41.7% in Bahrain to 4.0% in United Arab Emirates; the rest of other countries were 35.3%, 26.8% 23.6%, 9.8% for Qatar, Saudi Arabia, Oman, and Kuwait respectively (Table 4).
3.3. Death rate per 1000 confirmed cases
3.3.1. Low-income countries
The results demonstrated that among the four low-income countries, In 6 June 2020, the results demonstrated that among the four low-income countries, death rate range from 230.3/1000 in Yemen to 16.7/1000 in Afghanistan; the rest of other countries were 48.0/1000, 35.8/1000 for Syria and Somalia respectively. In 11 June 2020, the results demonstrated that among the four low-income countries, death rate range from 230.1/1000 in Yemen to 18.6 /1000 in Afghanistan; the rest of other countries were 36.6/1000, 33.8/1000 for Syria and Somalia respectively (Table 1).
3.3.2. Lower-middle income countries
In 6 June 2020, the results demonstrated that among the seven lower-middle income countries, death rate range from 59.0/1000 in Sudan to 6.2/1000 in Djibouti, the rest of other countries were 45.1/1000, 36.7/1000, 25.5/1000, 20.6/1000, 6.5/1000 for Tunisia, Egypt, Morocco, Pakistan, and Palestine respectively. In 11 June 2020, the results demonstrated that among the seven lower-middle income countries, death rate range from 60.9/1000 in Sudan to 6.2/1000 in Palestine; the rest of other countries were 45.1/1000, 34.7/1000, 24.7/1000, 19.7/1000, 8.4/1000 for Tunisia, Egypt, Morocco, Pakistan, and Djibouti respectively (Table 2).
3.3.3. Upper-middle income countries
In 6 June 2020, the results demonstrated that among the five upper-middle income countries, death rate range from 48.4/1000 in Iran to 11.3/1000 in Jordan, the rest of other countries were 28.6/1000, 22.0/1000, 19.5/1000 for Iraq, Lebanon, and Libya Respectively. In 11 June 2020, the results demonstrated that among the five upper-middle income countries, death rate range from 47.6/1000 in Iran to 10.1/1000 in Jordan; the rest of other countries were 27.4/1000, 22.1/1000, 12.7/1000 for Iraq, Lebanon, and Libya Respectively (Table 3).
3.3.4. High-income countries
In 6 June 2020, the results demonstrated that among the six high-income countries, death rate range from 8.2/1000 in Kuwait to 0.76/1000 in Qatar; the rest of other countries were 7.2/1000, 6.8/1000, 4.5/1000, 1.7/1000 for United Arab Emirates, Saudi Arabia, Oman, and Bahrain respectively. In 11 June 2020, the results demonstrated that among the six high-income countries, death rate range from 8.1/1000 in Kuwait to 0.92/1000 in Qatar; the rest of other countries were 7.4/1000, 7.0/1000, 4.4/1000, 2.0/1000 for Saudi Arabia, United Arab Emirates, Oman, and Bahrain respectively (Table 4).
3.4. The percentage of variation death rate per 1000 confirmed cases
3.4.1. Low-income countries
The results demonstrated that among the four low income countries, three countries reported decrease the percentage of COVID-19 death rate / 1000 (Somalia, Syria, and Yemen), the decrease range from 23.8% in Syria, followed by 5.6% in Somalia and .09 in Yemen. Afghanistan data reported increased the percentage of COVID-19 death rate by 11.4% (Table 1).
3.4.2. Lower-middle income countries
The results demonstrated that among the seven lower-middle income countries, four countries reported decrease the percentage of COVID-19 death rate / 1000 (Egypt, Morocco, Pakistan, and Palestine), the decrease range from 5.4% in Egypt, followed by 4.6% in Palestine to 3.1% in Morocco and 4.4% in Pakistan. Djibouti and Sudan data demonstrated increase the percentage of COVID-19 death rate / 1000, for Tunisia there is no change in the percentage of COVID-19 death rate (Table 2).
3.4.3. Upper-middle income countries
The results demonstrated that among the five upper-middle income countries, all countries data reported decrease the percentage of COVID-19 death rate / 1000 except Lebanon increased by 0.4%, the decrease range from 34.9% in Libya, Followed by 10.6% in Jordan to 1.6% in Iran, followed by 4.6% in Iraq (Table 3).
3.4.4. High-income countries
The results demonstrated that among the six high-income countries, United Arab Emirates, Oman, and Kuwait data reported decrease the percentage of COVID-19 death rate by 2.8%, 2.2%, 1.2% respectively. On the other hand, Qatar, Bahrain, and Saudi Arabia data reported increase the percentage of COVID-19 death rate by 21.0%, 17.6%, 8.8% respectively (Table 4).
3.5. Tests per one million
3.5.1. Low-income countries
The results demonstrated that among the four low-income countries, the tests per one million range from 1381 in Afghanistan to four in Yemen; data not available for Somalia and Syria (Table 1).
3.5.2. Lower-middle income countries
The results demonstrated that among the seven lower-middle income countries, the tests per one million range from 40880 in Djibouti to 9 in Sudan, the rest of other countries were 10550, 8809, 4849, 3667, 1321 for Morocco, Palestine, Tunisia, Pakistan, and Egypt respectively (Table 2).
3.5.3. Upper-middle income countries
The results demonstrated that among the five upper-middle income countries, the tests per one million range from 25216 in Jordan to 1714 in Libya, the rest of other countries were15145, 14261, and 8704 for Lebanon, Iran, and Iraq respectively (Table 3).
3.5.4. High-income countries
The results demonstrated that among the six high-income countries, the tests per one million range from 265687 in the United Arab Emirate to 26092 in Oman, the rest of other countries were 237420, 99959, 77368, and 29966 For Bahrain, Qatar, Kuwait, and Saudi Arabia respectively (Table 4).