JERUSALEM – Doctors reported progress yesterday by Prime Minister Sharon, saying the Israeli leader moved his left hand and appeared to respond to his sons’ voices in new signs of recovery from a massive stroke.

But while doctors said Mr. Sharon was no longer in immediate danger, they cautioned it would be days before they could determine the full extent of the damage he suffered from a brain hemorrhage and whether he has lost his ability to think and reason.

“I think compared with recent days … there are significant changes in the prime minister’s condition. But we still have a long way to go, and we have to be patient,” one of Sharon’s anesthesiologists, Dr. Yoram Weiss, said.

Mr. Sharon suffered a massive stroke January 4 and underwent three surgeries to stop hemorrhaging on the right side of his brain. He has been kept in a medically induced coma to give him time to recover.

Israelis were stunned at the illness of their 77-year-old leader and have intensely followed updates on his condition. Some made pilgrimages to Hadassah Hospital, gathering outside to pray, hanging up posters of support and offering letters of well wishes, many written by children.

Israeli police said crime in the country had fallen 50% since Mr. Sharon’s stroke. “It’s hard to explain, but since the prime minister became ill there seems to have been a change in people’s behavior patterns, their way of thinking,” a police spokesman, Mickey Rosenfeld, said.

In his first public statement since his father’s stroke, Mr. Sharon’s son Omri said the family was grateful for the outpouring of support.

“I came to thank, in the name of my family, the citizens of Israel, who since Wednesday have supported us with their concern, with warm and loving prayers for the well-being of my father,” he told reporters outside the hospital. “In addition, I want to send our great appreciation and thanks to Hadassah Hospital, the medical team treating my father, and his personal doctors who have been working day and night to treat the prime minister.”

Also yesterday, Secretary of State Rice called the acting prime minister, Ehud Olmert, to check on Mr. Sharon and renew the Bush administration’s support for establishment of a Palestinian Arab state.