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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: Am J Geriatr Psychiatry. 2010 Jun;18(6):520–530. doi: 10.1097/JGP.0b013e3181cc0350

Table 4.

Comparisons of Quality of Life* Between Age groups

Unadjusted Mean (SD) Adjusted Analysis for Old versus Young
Age 60+
Age 18-59
Mean Difference (95% CI)
t
df
P
Physical Functioning
Baseline 46.64 (44.51) 81.83 (33.56) 6.84 (2.00 - 11.68) 2.77 1079 0.01
6-month follow-up 41.38 (41.55) 65.02 (43.04) 2.34 (-5.21 - 9.89) 0.61 762 0.55
12-month follow-up 43.83 (41.56) 59.83 (44.52) 8.01 (-0.46 - 16.48) 1.86 669 0.07
Role Functioning
Baseline 10.63 (26.83) 15.52 (29.73) -2.03 (-6.63 - 2.57) -0.86 1079 0.39
6-month follow-up 27.26 (36.91) 45.12 (39.68) -0.07 (-7.08 - 6.95) -0.02 762 0.99
12-month follow-up 28.75 (39.03) 51.20 (40.34) -3.77 (-11.74 - 4.20) -0.93 668 0.36
Bodily Pain
Baseline 59.20 (36.94) 42.00 (31.89) 1.28 (-4.03 - 6.58) 0.47 1079 0.64
6-month follow-up 49.22 (36.41) 36.71 (31.96) -0.18 (-6.22 - 5.87) -0.06 762 0.96
12-month follow-up 53.35 (37.11) 36.39 (32.79) 2.28 (-4.44 - 9.00) 0.67 669 0.51
General Health
Baseline 20.11 (19.16) 23.05 (18.49) -0.40 (-3.37 - 2.58) -0.26 1079 0.80
6-month follow-up 28.35 (23.79) 31.57 (20.72) -1.09 (-5.13 - 2.95) -0.53 762 0.60
12-month follow-up 30.39 (25.93) 34.83 (21.49) -2.59 (-7.29 - 2.10) -1.08 669 0.28
Social Functioning
Baseline 38.69 (34.23) 46.52 (32.54) 1.73 (-3.44 - 6.90) 0.66 1078 0.52
6-month follow-up 51.57 (38.12) 68.86 (32.41) -3.91 (-10.25 - 2.43) -1.21 761 0.23
12-month follow-up 57.02 (38.09) 69.18 (32.49) 1.72 (-5.21 - 8.65) 0.49 668 0.63
Mental Health
Baseline 43.29 (23.20) 35.66 (20.01) 0.54 (-2.85 - 3.93) 0.31 1079 0.76
6-month follow-up 58.89 (24.12) 57.52 (24.38) -0.19 (-4.81 - 4.43) -0.08 761 0.94
12-month follow-up 61.21 (24.83) 59.16 (25.00) 2.52 (-2.58 - 7.61) 0.97 668 0.34
*

Short-Form Health Survey (SF) was used to assess quality of life scales (range 0 to 100, high score indicated better functioning and more pain). Home Care trial used SF 20 items survey (SF-20) and others used SF 12 items survey (SF-12). ANCOVA models were adjusted for baseline scores, type of trials and intervention status. EUC indicates enhanced usual care; SD, standard deviation; CI, confidence interval. Number of participants varied across waves and outcomes (old adults - baseline n=440, 6-month n=287-288, 12-month n=253-254; young adults - baseline n=640-641, 6-month n=475-476, 12-month n=417).