Helge Garåsen The Trondheim Model - NSDM

Survival curves were estimated by Kaplan-Meier. The distribution of continuous variables
was tested by comparing means and medians and by normality plots. Differences in number
of patients with readmissions, need for home care or nursing home care between groups were
tested by chi square tests, and differences in the mean number of days with inpatient care
were tested both by paired t-test and by Wilcoxon signed rank test. Differences in
readmissions and need for home care or nursing home care were also tested in logistic models
adjusted for gender, age, ADL score and diagnosis. The fit of the logistic models was tested
with Hosmer and Lemeshows goodness of fit test.
The number of days in institutions was compared between groups using covariance analyses
with age, gender, ADL scores and diagnoses as covariates.
4.2.7.2.3 Cost analyses
Differences in mean costs were analysed by independent sample T-test and adjustments in
differences in costs were analysed by ANOVA covariance analyses. As sensitivity analysis
we calculated how much the community hospital costs would have to be increased and the
general hospital costs decreased to render the observed differences insignificant.
4.2.7.2.4 Paper II, III and IV
All comparisons between the intervention and control group were analysed both as intentionto-treat
analyses and as treatment analyses, dependent on where the patient received the care.
All data was presented and analysed according to the CONSORT checklist. The comparisons
between the intervention and control group were analysed as intention-to-treat analyses
according to the CONSORT instructions.
Survival curves were estimated by using Kaplan-Meier. The distribution of continuous
variables was tested by comparing means and medians and by normality plots. Differences in
number of patients with readmissions and need for home care or nursing home care between
groups were tested by chi square tests, and differences in mean number of days of inpatient
care were tested both by paired t-test and by Wilcoxon signed rank test. Differences in
readmissions and need for home care or nursing home care were also analysed in logistic
models adjusted for gender, age, ADL score and diagnosis. Hosmer and Lemeshows goodness
of fit test tested the fit of the logistic models. The number of days in institutions was
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