Nancy Reagan says doctors should be more circumspect about commenting in public on the health problems of presidents and their families. In a television interview to be broadcast Friday night, Mrs. Reagan recalled an instance when she and President Reagan were watching television while he was in the hospital recovering from an operation ``and some doctor came on and said, `Well, I'll give him about four or five months.''' ``I thought to myself: Doesn't it ever occur to these people that we might be sitting watching?' What a terrible, terrible statement to make!'' She said Reagan did not react adversely to the doctor's comment but she said he reasonably could have wondered at that moment whether information about his health was being withheld from him. ``It would be a normal reaction,'' she said. Mrs. Reagan made her comments in an interview with Barbara Walters for a segment of the ABC-TV News ``20-20'' program. By coincidence, the program is being shown on the Reagans' 36th wedding anniversary. Mrs. Reagan did not say in the interview what the president was recovering from at the time the gloomy prognosis was broadcast. Nor did she provide any further details. Reagan has undergone several operations during the seven years of his presidency. Recalling her bout with breast cancer, the first lady also said she did not understand the criticism directed at her when she chose to have her breast removed rather than to undergo chemotherapy or radiation treatment. ``I really don't understand the people who criticize,'' she said. ``It was my choice to make. So don't criticize me for making what I thought was the right choice for me. ``You know the whole point about feminism is that you have a choice, that women have a choice. ... ``And I think having doctors who know nothing about the case, who know nothing about you, and know nothing about the case at all coming on giving their opinion, I don't think that's right.''