A medical study from 2008 in Tirana on the relationship between religious observance and acute coronary syndrome found out that 67% of Muslims and 55% of Christians were completely religiously non-observant. The regular attendance of religious institutions (at least once every 2 weeks) was low in both denominations (6% in Muslims and 9% in Christians), and weekly attendance was very low (2% and 1%, respectively). Frequent praying (at least 2 to 3 times per week) was higher in Christians (29%) than in Muslims (17%) Praying several times daily (as required of devout Muslims) was rare (2% in Muslims and 3% in Christians). Regular fasting during Ramadan or Lent was similarly low in Muslims and Christians (5% and 6%, respectively). Generally Christians in the study were more observant then Muslims (26% vs 17%).