Predictors of Treatment Outcome for Retreatment Pulmonary Tuberculosis Cases among Tribal People of an Eastern India District: A Prospective Cohort Study
Table 3
Logistic regression model for the predictors of unfavourable outcome.
(a) Omnibus tests of model coefficients
Chi-square
df
Sig.
Step
Step
40.272
8
.000
Block
40.272
8
.000
Model
40.272
8
.000
(b) Model summary
Step
−2 log likelihood
Cox & Snell square
Nagelkerke square
1
144.747
.217
.321
Estimation terminated at iteration number 6 because parameter estimates changed by less than .001.
(c) Classification table
Observed
Predicted
Outcome
Percentage correct
.00
1.00
Step
Outcome
Favorable (0.00)
114
10
91.9
Unfavorable (1.00)
26
15
36.6
Overall percentage
78.2
The cut value is .500.
(d) Variables in the equation
SE
Wald
df
Sig.
95% CI for
Lower
Upper
Step
() Age
−.014
.016
.723
1
.395
.986
.955
1.018
() Religion
1.415
.493
8.226
1
.004
4.115
1.565
10.821
() Type of category II patients
6.099
4
.192
Treatment after default ()
1.416
.896
2.494
1
.114
4.120
.711
23.876
Failure ()
.985
1.080
.831
1
.362
2.678
.322
22.241
Relapse ()
.671
.898
.558
1
.455
1.955
.336
11.367
Transferred in & others ()
−.529
1.226
.186
1
.666
.589
.053
6.515
() Sputum positivity pretreatment phase of category II patients
.358
.250
2.042
1
.153
1.430
.876
2.336
() Sputum positivity after completion of initiation phase
1.937
.649
8.920
1
.003
6.940
1.946
24.746
Constant
−4.402
1.359
10.491
1
.001
.012
Variable(s) entered on step : age, religion, type of category II patients, sputum positivity pretreatment phase of category II patients, and sputum positivity after completion of initiation phase. #Scoring: Religion: Hindu = 0, minority by religion = 1; type of category II patients: treatment after default = 0, failure = 1, relapse = 2, and transferred in & others = 3; sputum positivity pretreatment phase of category II patients: (scanty & 1+) = 0, (2+ & 3+) = 1; sputum positivity after completion of initiation phase: negative = 0, positive = 1.
