Table 1 Prediction model for setting zone. Variables related to the serve.
Excellent* (%) Not acceptable (%) OR Crude OR Adjusted P Acceptable(%) OR Crude OR Adjusted P
Serve type
Jump float serve 82.7 6.9 .40 (.31-.50) .61 (.46-.81) .001 10.4 .68 (.55-.85) .74 (.57-.95) .020
Tennis jump serve†  71.7 15.2 13.2
Server player
Setter 76.4 12.3 .56 (.41-.77) .63 (.45-.87) .005 11.3 .87 (.61-1.2) .94 (.66-1.35) .750
Zone 4 attacker 74.3 12.1 .57 (.43-.74) .61 (.46-.81) .001 13.6 1.07 (.79-1.46) 1.15 (.84-1.57) .392
Opposite 79.8 9.0 .39 (.29-.52) .57 (.41-.78) .000 11.2 .83 (.60-1.13) 1.01 (.72-1.42) .949
Middle attacker 68.6 19.7 12.1
Serve depth
Short 73.9 14.2 .56 (.33-.93) 1.45 (.77-2.73) .252 11.9 .72 (.41-1.26) .89 (.46-1.76) .745
Intermediate 79.3 9.3 .34 (.28-.42) .56 (.43-.73) .000 11.4 .64 (.51-.80) .78 (.59-1.04) .087
Long†  63.6 22.0 14.4
reference category for the dependent variable reference category for the independent variable