Table 4 Changes in SF-12 health-related quality of life during the study

General health

56 ± 28

60 ± 26

0.03

Limited moderate activities

71 ± 34

70 ± 35

0.96

Climbing several flights of stairs

69 ± 39

71 ± 35

0.26

Accomplished less than would like: physical health

69 ± 46

78 ± 42

0.00

Limited in work or other activities

69 ± 46

76 ± 43

0.01

Accomplished less than would like: emotional health

79 ± 42

78 ± 42

0.57

Didn’t do work as carefully as usual

74 ± 44

79 ± 41

0.06

Pain interfering with normal work

72 ± 28

72 ± 27

0.51

Felt calm and peaceful

64 ± 22

61 ± 20

0.02

Have a lot of energy

63 ± 22

60 ± 21

0.00

Felt downhearted and blue

67 ± 19

68 ± 21

0.58

Health problems interfered with social activities

68 ± 26

71 ± 71

0.18