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. 2004 Sep 1;54(506):667–672.

Table 2.

Patient characteristics: experimental and control groups.

Measure Total Tape No tape 95% CI for differences between means
Total participants 180 95 85
 Females 88 43 45
 Males 92 52 40
Mean age in years 40 40 39
Control over condition: mean rating (SD) where 4 = very high control 2.15 (1.12) 2.15 (1.10) 2.15 (1.15) −0.33 to 0.34
Mean consultation frequency in past 6 months (SD) 1.09 (0.81) 1.09 (0.86) 1.09 (0.75) −0.24 to 0.24
Pre-tape understanding of consultation: mean rating (SD) where 4 = very good 3.76 (0.45) 3.73 (0.49) 3.80 (0.40) −0.06 to 0.21
Pre-tape satisfaction with consultation: mean rating (SD) where 4 = very good 3.73 (0.59) 3.75 (0.60) 3.71 (0.57) −0.21 to 0.13

aSD = standard deviation.