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. Author manuscript; available in PMC: 2009 Mar 16.
Published in final edited form as: Pain. 2006 Sep 7;126(1-3):155–164. doi: 10.1016/j.pain.2006.06.035

Table 2.

Descriptive Statistics for Ratings of Anxiety and Pain as a Function of Room Time Presented solely for illustrative purposes, these Table gives unconnected “snapshots” across the procedure not taking into account the longitudinal nature of the ordinal data. Because of the skew of the data, medians and interquartile ranges (25th to 75th percentile range) are given as measures of center and variability. N refers to number of patients providing ratings at any given time interval.

Ratings of Anxiety

Standard of Care Empathy Hypnosis



Time (Min) Median N Inter-Quartile Range Median N Inter-Quartile Range Median N Inter-Quartile Range




0 4.5 76 (2 – 6) 5 82 (3 – 7) 5 78 (3 – 6)
10 4 76 (2 – 6) 4 81 (2 – 7) 4 77 (2 – 6)
20 4 76 (2 – 6) 4 81 (2 – 7) 3 75 (2 – 5)
30 4 70 (2 – 6.25) 4.5 72 (2 – 6) 4 66 (2 – 6)
40 5 59 (3 – 7) 5 57 (3 – 6) 4 52 (1.25 – 6)
50 6 42 (2.75 – 7) 4 45 (2 – 6) 3 39 (1 – 5)
60 5 32 (2.25 – 8) 4 31 (2 – 6) 2.5 26 (0 – 5.25)
70 5 23 (3 – 8) 3 23 (2 – 6) 2.5 20 (0 – 4)
80 5 15 (2 – 8) 4 12 (2 – 6) 3 8 (0 – 4.75)
90 5 8 (0.5 – 8.75) 5 7 (1 – 8) 0.5 4 (0 – 4)
100 4 7 (0 – 9) 3 5 (0 – 5.5) 2 5 (0 – 5)
110 4.5 4 (0.5 – 8.5) 2 2 (0 – 3) 5 1 (5 – 5)
Ratings of Pain

Standard of Care Empathy Hypnosis



Time (Min) Median N Inter-Quartile Range Median N Inter-Quartile Range Median N Inter-Quartile Range




0 0 76 (0 – 1.75) 0 81 (0 – 0) 0 78 (0 – 1)
10 0 76 (0 – 2) 0 81 (0 – 1) 0 77 (0 – 2)
20 1 76 (0 – 4) 0 81 (0 – 2) 0 75 (0 – 2)
30 2 70 (0 – 4) 0 72 (0 – 3) 0 65 (0 – 2)
40 2 59 (0 – 5) 2 57 (0 – 4) 0 52 (0 – 3)
50 4 41 (0 – 6) 2 45 (0 – 4.5) 1 39 (0 – 3)
60 2.5 32 (0 – 4) 2 31 (0 – 5) 1 26 (0 – 6)
70 4 23 (2 – 6) 2 23 (0 – 1) 2 20 (0 – 4.5)
80 5 15 (2 – 7) 3.5 12 (1.25 – 4.75) 2.5 8 (0 – 7)
90 5 8 (5 – 8) 2 7 (1 – 5) 1.5 4 (0 – 7.5)
100 9 7 (7 – 9) 2 5 (1 – 4.5) 2 5 (0.5 – 5.5)
110 8.5 4 (8 – 9.75) 3 2 (3 – 3) 10 1 (10 – 10)