The Pew Research Center has found that 80 percent of U.S. Muslims say they observe Ramadan by fasting during daylight hours. More of the U.S.’s 2.15 million Muslim adults say they do this than say that they pray five times a day (42 percent) or attend mosque weekly (43 percent). More Muslim women say they observe Ramadan in this way (82 percent) than say they wear the hijab at least most of the time (43 percent).

The 82 percent of Muslim women who say they fast during Ramadan is statistically similar to the 77 percent of Muslim men who say they do. There was also little difference in the share of this response between Muslims born in the U.S. (79 percent) and those who are immigrants (80 percent).

92 percent of U.S. Muslims who say religion is “very important” in their lives observe the holiday, and among Muslims who say religion is “somewhat important” in their lives, 65 percent say they fast. However, what is interesting is that even a substantial share (41 percent) of those who say religion is “not too” or “not at all” important say they fast.

The results were gathered during a 2017 Pew Research Center survey of U.S. Muslims. Research from the Center in 2012 showed that in countries with sizable Muslim populations, more than 90 percent of Muslim adults fast, “making it the second-most-observed of Islam’s Five Pillars, behind only the shahada, the affirmation of belief in God and the Prophet Muhammad.”