Table 1 Baseline characteristics of all patients, the group with SSF and the control group

Cases

963

30

8

12

933

6

132

Gender (male/female)

312/651

12/18

4/4

0/12

299/634

3/3

25/107

Age (year)

67.8 ± 13.2

63.0 ± 13.4

66.9 ± 7.5

70.3 ± 10.7

68.0 ± 13.1

52 ± 11.8

70.4 ± 11.9

BMI

25.9 ± 2.7

24.7 ± 2.7

24.3 ± 3.2

24.4 ± 2.5

25.6 ± 2.7

23.4 ± 2.0

26.2 ± 3.2

Garden type

I

38(3.9%)

4(13.3%)

0

1(8.3%)

36(3.9%)

0

0

II

116(12.1%)

14(46.7%)

2(25.0%)

8(66.7%)

106(11.3%)

0

7(5.3%)

III

427(44.3%)

8(26.7%)

3(37.5%)

2(16.7%)

419(44.9%)

4(66.7%)

52(39.4%)

IV

382(39.7%)

4(13.3%)

3(37.5%)

1(8.3%)

372(39.9%)

2(33.3%)

73(55.3%)

Pauwels type

I

48(5.0%)

20(66.7%)

4(50.0%)

10(83.3%)

32(3.4%)

0

19(14.4%)

II

683(70.9%)

10(33.3%)

4(50.0%)

2(16.7%)

669(71.7%)

6(100%)

77(58.3%)

III

232(24.1%)

0

0

0

232(24.9%)

0

26(17.4)