Reshmy Mohan, Jissa V Thulaseedharan
Breast screening practices of 35-65 years old women - A cross-sectional survey in Alappuzha, Kerala, India
Journal of education and health promotion
compare performance injury prediction model categorising predictors one compare selection predictors based univariate significance versus assessing nonlinear relationships validation replication previously developed injury prediction model cohort 1466 service members followed 1 year physical performance medical history sociodemographic variables collected original model dichotomised 11 predictors second model m2 kept predictors continuous assumed linearity third model m3 conducted nonlinear transformations fourth model m4 chose predictors proper way clinical reasoning supporting evidence model performance assessed r2 calibration large calibration slope discrimination decision curve analyses performed risk thresholds 025 050 478 personnel sustained injury original model demonstrated poorer r2 original007 m2063 m3064 m4008 calibration large original011 95 ci 022 000 m2 002 95 ci 017 013 m3003 95 ci 013 019 m4 013 95 ci 025 001 calibration slope original084 95 ci 061 107 m2097 95 ci 086 108 m3090 95 ci 075 105 m4 081 95 ci 059 103 discrimination original063 95 ci 060 066 m2090 95 ci 088 092 m3090 95 ci 088 092 m4 063 95 ci 060 066 025 injury risk m2 m3 demonstrated 043 net benefit improvement 050 injury risk m2 m3 demonstrated 033 net benefit improvement compared original model model performance substantially worse models dichotomised variables highlights need follow established recommendations developing prediction models