Table 4 

Sensitivity, specificity, predictive values and efficiency outcomes for the algorithm score 

PHQ 027 
PHQ > 10 



Occurrence 
* 
N = 91 


pos. algorithm 
N = 42 (21.3%) 
N = 42 (46.2%) 
neg. algorithm 
N = 155 (78.7%) 
N = 49 (53.9%) 


Sensitivity 
58.3% 
63.6% 
Specificity 
86.9% 
63.8% 
PV (pos. t.) 
50.0% 
50.0% 
PV (neg. t.) 
90.3% 
75.5% 
Efficiency 
78.7% 
53.9% 


*consists of all participants, N = 197 (Abbreviations: pos. algorithm, positive algorithm; neg. algorithm, negative algorithm; PV, predictive value; neg. t, negative test results; pos. t., positive test results) 

van SteenbergenWeijenburg et al. BMC Health Services Research 2010 10:235 doi:10.1186/1472696310235 