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Table 4 Subgroup-specific descriptive statistics for change in the dependent variables caregiver burden/depressiveness by the severity of cognitive impairment (n = 304)

From: Can brief telephone interventions reduce caregiver burden and depression in caregivers of people with cognitive impairment? - long-term results of the German day-care study (RCT)

VariableDescriptivest-test for independent samplesEffect size for mean difference
Mean Diff.
(T2-T0)
Standard Deviationt (df)p-valueCohen’s d
[95% CI]
Caregiver BurdenSeverity 
IG (N = 41)MCI−.46a4.67t (69) = 1.56.1240.374
[−0.109; 0.857]
CG (N = 30)MCI1.30a4.77
IG (N = 72)mild−1.44a5.07t (122) = 2.44.0160.443
[0.079; 0.808]
CG (N = 52)mild1.00a6.09
IG (N = 60)moderate1.47a5.87t (107) =−1.19.2380.229
[−0.611; 0.154]
CG (N = 49)moderate.18a5.28
Depressiveness (inversely coded)Severity 
IG (N = 41)MCI.46b6.08t (69) =−.61.5420.147
[−0.620; 0.329]
CG (N = 30)MCI−.30b3.63
IG (N = 72)mild.76b4.69t (122) =−2.86.0050.520
[−0.886; −0.154]
CG (N = 52)mild−1.92b5.77
IG (N = 60)moderate−1.37b4.88t (87.88) = .88.3820.169
[−0.213; 0.551]
CG (N = 49)moderate−.39b6.43
  1. Significant p-values (<.05) are in bold
  2. bNegative values depict a worsening in the outcome
  3. Positive values depict a worsening in the outcome