Wagner EH, LaCroix AZ, Grothaus LC, Hecht JA. Responsiveness of health status measures to change among older adults. J Am Geriatr Soc. 1993 Mar;41(3):241-8.
Wagner EH, LaCroix AZ, Grothaus LC, Hecht JA. Responsiveness of health status measures to change among older adults. J Am Geriatr Soc. 1993 Mar;41(3):241-8.