Skip to main content

Advertisement

Table 3 Odds ratios comparing uptake in intervention and control conditions

From: Pre-notification and reminder SMS text messages with behaviourally informed invitation letters to improve uptake of NHS Health Checks: a factorial randomised controlled trial

Pre-notification Letter Reminder Total patients Uptake (n) Uptake proportion Odds ratio 95% Confidence Interval.
No control no 814 148 0.18 1.00   
No open-ended no 724 167 0.23 1.35 1.05 1.73
No time-limited no 747 158 0.21 1.21 0.94 1.55
No social norms no 800 159 0.20 1.12 0.87 1.43
No control yes 885 210 0.24 1.40 1.11 1.77
No open-ended yes 692 194 0.28 1.75 1.37 2.24
No time-limited yes 754 203 0.27 1.66 1.30 2.11
No social norms yes 723 176 0.24 1.45 1.13 1.85
Yes control no 783 168 0.21 1.23 0.96 1.57
Yes open-ended no 765 204 0.27 1.64 1.29 2.08
Yes time-limited no 761 197 0.26 1.57 1.24 2.00
Yes social norms no 754 179 0.24 1.40 1.10 1.79
Yes control yes 803 192 0.24 1.41 1.11 1.80
Yes open-ended yes 727 179 0.25 1.47 1.15 1.88
Yes time-limited yes 734 220 0.30 1.93 1.52 2.44
Yes social norms yes 778 190 0.24 1.45 1.14 1.85
  1. Reference category: control letter with no pre-notification or reminder