The number of deaths of infants under one year old in a given year per 1,000 live births in Bahrain is 9.68 while in Spain it is 3.33.

This entry gives the number of deaths of infants under one year old in a given year per 1,000 live births in the same year; included is the total death rate, and deaths by sex, male and female. This rate is often used as an indicator of the level of health in a country.
Source: CIA World Factbook

The per capita consumption of electricity in Spain is 5,230kWh while in Bahrain it is 9,869kWh

This entry consists of total electricity generated annually plus imports and minus exports, expressed in kilowatt-hours. The discrepancy between the amount of electricity generated and/or imported and the amount consumed and/or exported is accounted for as loss in transmission and distribution.
Source: CIA World Factbook

Spain consumes 1.2180 gallons of oil per day per capita while Bahrain consumes 1.6464

This entry is the total oil consumed in gallons per day (gal/day) divided by the population. The discrepancy between the amount of oil produced and/or imported and the amount consumed and/or exported is due to the omission of stock changes, refinery gains, and other complicating factors.
Source: CIA World Factbook

175 in every 100,000 people are currently imprisoned in Bahrain compared to 141 in Spain

This entry contains the number of people in penal institutions, including pre-trial detainees. Comparability is hampered by differences in local practice, including whether psychiatrically ill offenders are under the authority of the prison administration. People held in a form of custody not under the authority of a prison administration are not included in this figure.
Source: International Centre for Prison Studies

The life expectancy at birth in Bahrain is 78.58 while in Spain it is 81.47.

This entry contains the average number of years to be lived by a group of people born in the same year, if mortality at each age remains constant in the future. The entry includes total population as well as the male and female components. Life expectancy at birth is also a measure of overall quality of life in a country and summarizes the mortality at all ages. It can also be thought of as indicating the potential return on investment in human capital and is necessary for the calculation of various actuarial measures.
Source: CIA World Factbook

The GDP per capita in Bahrain is $29,800 while in Spain it is $30,100

This entry shows GDP on a purchasing power parity basis divided by population as of 1 July for the same year. A nation's GDP at purchasing power parity (PPP) exchange rates is the sum value of all goods and services produced in the country valued at prices prevailing in the United States. This is the measure most economists prefer when looking at per-capita welfare and when comparing living conditions or use of resources across countries. The measure is difficult to compute, as a US dollar value has to be assigned to all goods and services in the country regardless of whether these goods and services have a direct equivalent in the United States (for example, the value of an ox-cart or non-US military equipment); as a result, PPP estimates for some countries are based on a small and sometimes different set of goods and services. In addition, many countries do not formally participate in the World Bank's PPP project that calculates these measures, so the resulting GDP estimates for these countries may lack precision. For many developing countries, PPP-based GDP measures are multiples of the official exchange rate (OER) measure. The differences between the OER- and PPP-denominated GDP values for most of the wealthy industrialized countries are generally much smaller.
Source: CIA World Factbook