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. 2014 Jan 3;14:3. doi: 10.1186/1472-6963-14-3

Table 3.

Missing data regarding the demographic questions and STAI items

  Self-completed
Researcher-completed n = 108 z statistic P
n = 93
Demographic questions
Employment
3 (3.2%)
0 (0.0%)
1.88
0.06
Educational level
5 (5.4%)
3 (0.9%)
0.94
0.35
Ethnicity
2 (2.2%)
0 (0.0%)
1.53
0.13
Domestic status
2 (2.2%)
1 (0.9%)
0.71
0.48
Smoking
2 (2.2%)
0 (0.0%)
1.53
0.13
At risk of cancer (family history)
2 (2.2%)
1 (0.9%)
0.71
0.48
6-item STAI
STAI item 1
7 (7.5%)
0 (0.0%)
2.90
0.004
STAI item 2
14 (15.1%)
0 (0.0%)
4.18
0.000
STAI item 3
17 (18.3%
0 (0.0%)
4.64
0.000
STAI item 4
10 (10.8%)
0 (0.0%)
4.64
0.000
STAI item 5
13 (14.0%)
1 (0.9%)
3.63
0.0003
STAI item 6 14 (15.1%) 0 (0.0%) 4.18 0.000