Table 2.

P values in the t-test for the most significant variables in each of the stratified groups.

Variable	P
Case management
Patient age on admission	0.0054
Considered useful to make a follow-up call	0.0087
Acute myocardial infarction	0.0066
Thyroid disease	0.0013
Use of antipsychotics	0.0039
Use of inhalers	0.0034
Diagnosis of chronic obstructive pulmonary disease exacerbation	0.0021
Heart failure
Acute myocardial infarction	0.0001
Dementia	0.0001
Number of medications prescribed on emergency department discharge	0.0000
Diagnosis of gastrointestinal illness	0.0020
Chronic obstructive pulmonary disease
Dementia	0.0071
Depression	0.0038
Use of anticoagulants	0.0071
Genitourinary problems	0.0021
Use of opioids	0.0021
History of falls	0.0071
Diabetes mellitus
Organic lesions	0.0006

P value of the difference between readmitted and nonreadmitted patients.