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Table 1 Baseline patient characteristics

From: Item response theory and factor analysis as a mean to characterize occurrence of response shift in a longitudinal quality of life study in breast cancer patients

 

N

%

Hospital

  

Dijon

271

71.1

Nancy

74

19.4

Reims

18

4.7

Strasbourg

18

4.7

Inclusion criteria

  

Confirmed primary breast cancer

242

63.5

Suspicion of primary breast cancer

138

36.2

Unknown

1

0.3

Cancer

  

Confirmed

340

89.2

Not confirmed

38

10.0

Unknown

3

0.8

Lymph node dissection(LND)

  

Axillary LND

138

36.2

Sentinel lymph node biopsy

131

34.4

ALND + SLNB

32

8.4

No LND

75

19.7

Unknown

5

1.3

Surgery type

  

Mastectmoy

124

32.6

No mastectomy

241

63.3

Unknown

16

4.2

Chemotherapy

  

Yes

155

40.7

No

218

57.2

Unknown

8

2.1

Radiotherapy

  

Yes

254

66.7

No

119

31.2

Unknown

8

2.1

Hormone therapy

  

Yes

170

44.6

No

203

53.3

Unknown

8

2.1

Questionnaires order

  

Arm 1: then-test/post-test

192

50.4

Arm 2: post-test/then-test

189

49.6