caa a22 4500 386356548 CHVBK 20180307111855.0 cr unu---uuuuu 161130e198907 xx s 000 0 eng 10.1017/S0266462300007418 doi S0266462300007418 pii (NATIONALLICENCE)cambridge-10.1017/S0266462300007418 Roos Leslie L. University of Manitoba Nonexperimental Data Systems in Surgery [Elektronische Daten] [Leslie L. Roos] This article reviews nonexperimental data bases, emphasizing the present uses and future opportunities of routinely collected information. Data bases are discussed in terms of appropriate research designs. Possibilities for expanding available information through new data collection and through record linkage are stressed. The relationship of nonexperimental data systems to randomized trials and to clinical decision-making is examined. Copyright © Cambridge University Press 1989 International Journal of Technology Assessment in Health Care Cambridge University Press 5/3(1989-07), 341-356 0266-4623 5:3<341 1989 5 THC https://doi.org/10.1017/S0266462300007418 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0266462300007418 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Roos Leslie L. University of Manitoba NATIONALLICENCE 773 0- International Journal of Technology Assessment in Health Care Cambridge University Press 5/3(1989-07), 341-356 0266-4623 5:3<341 1989 5 THC CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge