Irish workers strike more often than Danes. Belgium has more doctors per capita than Britain. People in Italy like to walk to work, and the average resident of Luxembourg works 58 minutes to buy a leg of lamb. These and other gleanings about western Europe are available for the browsing from "Social Indicators for the European Community," a 234-page compendium of facts and figures, mostly figures, put out by the Common Market. Here is a list of the countries and some of the things they lead in or have the most of: LUXEMBOURG: Night workers, foreign students, people leaving the country each year and houses with more than seven rooms, 25 percent of all dwellings. WEST GERMANY: Total population, paid holidays for workers covered by union contracts and maternal mortality, 36 per 100,000 births. BRITAIN: Money spent on entertainment and lengthy hospital stays, a mean of 22 days. BELGIUM: Female traffic fatalities, outhouses, part-time working women and doctors, one for every 490 residents. NETHERLANDS: Population density, people who ride bicycles to work, and life expectancy, 71.5 years for men and 78 years for women. IRELAND: Birthrate, hours lost in labor disputes and students, 23.2 percent of the population. FRANCE: Rice and meat consumption, male traffic deaths and teen-age brides, 6.4 percent of all married women. ITALY: Teen-age fertility, unemployment, pay for women coal miners and black and white television sets, found in 90.7 percent of all homes. DENMARK: Divorce, employment, trade unionists, suicides and spending for education, the equivalent of $5,700 per student.