Wagenaar, A. C., Molnar, L. J., & Businski, K. L. (1988b). Direct Observation of Safety Belt Use in Michigan: Spring 1988. (Report No. UMTRI-88-24). Ann Arbor, MI: The University of Michigan Transportation Research Institute. Home/Search Document Not in Database Summary Related Articles Check |
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UMTRI-99-33 DIRECT OBSERVATION OF SAFETY BELT USE IN.. - Report No Umtri- (1999) (Correct)
....These 28 counties were then separated into four strata. The strata were constructed by obtaining historical belt use rates and vehicle miles of travel (VMT) for each county. Historical belt use rates were determined by averaging results from three previous UMTRI surveys (Wagenaar Molnar, 1989; Wagenaar, Molnar, Businski, 1987b, 1988b) Since no historical data were available for six of the counties, belt use rates for these counties were estimated using multiple regression based on per capita income and education for the other Education was defined as the proportion of population in the county over 25 years of age with a ....
Wagenaar, A. C., Molnar, L. J., & Businski, K. L. (1988b). Direct Observation of Safety Belt Use in Michigan: Spring 1988. (Report No. UMTRI-88-24). Ann Arbor, MI: The University of Michigan Transportation Research Institute.
UMTRI-99-33 DIRECT OBSERVATION OF SAFETY BELT USE IN.. - Report No Umtri- (1999) (Correct)
.... conducted roughly every 5 months between December 1985 and May 1988 (Wagenaar, Businski, Molnar, 1986a, 1986b; Wagenaar, Molnar, Businski, 1987a, 1987b, 1987c, 1988a, 1988b; Wagenaar, Wiviott, Businski, 1986) The twelfth, thirteenth, and fourteenth survey waves were conducted in April 1989 (Wagenaar Molnar, 1989), May 1990 (Streff Molnar, 1990) and June 1992 (Streff, Molnar, Christoff, 1993) The fifteenth through the twentieth survey waves were conducted in September during consecutive years (Eby Christoff, 1996; Eby Hopp, 1997; Eby Olk, 1998; Eby, Streff, Christoff, 1994; Eby, Streff, ....
....space to 28 counties. These 28 counties were then separated into four strata. The strata were constructed by obtaining historical belt use rates and vehicle miles of travel (VMT) for each county. Historical belt use rates were determined by averaging results from three previous UMTRI surveys (Wagenaar Molnar, 1989; Wagenaar, Molnar, Businski, 1987b, 1988b) Since no historical data were available for six of the counties, belt use rates for these counties were estimated using multiple regression based on per capita income and education for the other Education was defined as the proportion of population in ....
Wagenaar, A. C. & Molnar, L. J. (1989). Direct Observation of Safety Belt Use in Michigan: Spring 1989. (Report No. UMTRI-89-12). Ann Arbor, MI: The University of Michigan Transportation Research Institute.
UMTRI-99-33 DIRECT OBSERVATION OF SAFETY BELT USE IN.. - Report No Umtri- (1999) (Correct)
.... December 1985 and May 1988 (Wagenaar, Businski, Molnar, 1986a, 1986b; Wagenaar, Molnar, Businski, 1987a, 1987b, 1987c, 1988a, 1988b; Wagenaar, Wiviott, Businski, 1986) The twelfth, thirteenth, and fourteenth survey waves were conducted in April 1989 (Wagenaar Molnar, 1989) May 1990 (Streff Molnar, 1990), and June 1992 (Streff, Molnar, Christoff, 1993) The fifteenth through the twentieth survey waves were conducted in September during consecutive years (Eby Christoff, 1996; Eby Hopp, 1997; Eby Olk, 1998; Eby, Streff, Christoff, 1994; Eby, Streff, Christoff, 1995; Streff, Eby, Molnar, ....
Streff, F. M. & Molnar, L. J. (1990). Direct Observation of Safety Belt Use in Michigan: Spring 1990. (Report No. UMTRI-90-33). Ann Arbor, MI: The University of Michigan Transportation Research Institute.
An Analysis of Restraint Use by Children in Michigan - David Eby Ph (1999) (Correct)
....county. Historical belt use rates were determined by averaging results from three previous UMTRI safety belt surveys (Wagenaar, Molnar, Businski, 1987b 1988; Education was defined as the proportion of population in the county over 25 years of age with a professional or graduate 2 degree. 4 Wagenaar Molnar, 1989). Because no historical data were available for six of the counties, belt use rates for these counties were estimated using multiple regression based on per capita income and education for the other 22 counties (r = 56; U.S. Bureau of the Census, 2 1992) These factors have been shown previously ....
Wagenaar, A. C. & Molnar, L. J. (1989). Direct Observation of Safety Belt Use in Michigan: Spring 1989. (Report No. UMTRI-89-12). Ann Arbor, MI: The University of Michigan Transportation Research Institute.
An Analysis of Restraint Use by Children in Michigan - David Eby Ph (1999) (Correct)
....into four strata. Table 1 shows the counties contained in each stratum. The strata were constructed by obtaining historical belt use rates and vehicle miles of travel (VMT) for each county. Historical belt use rates were determined by averaging results from three previous UMTRI safety belt surveys (Wagenaar, Molnar, Businski, 1987b 1988; Education was defined as the proportion of population in the county over 25 years of age with a professional or graduate 2 degree. 4 Wagenaar Molnar, 1989) Because no historical data were available for six of the counties, belt use rates for these counties were estimated using multiple ....
Wagenaar, A. C., Molnar, L. J., & Businski, K. L. (1988 ). Direct Observation of Safety Belt Use in Michigan: Spring 1988. (Report No. UMTRI-88-24). Ann Arbor, MI: The University of Michigan Transportation Research Institute.
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