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. 2011 Feb 3;342:d195. doi: 10.1136/bmj.d195

Table 3.

 Staff survey scores in control and SPI1 hospitals at two periods* in evaluation of phase one of Safer Patients Initiative (SPI1)

Survey question‡ Control hospitals SPI1 hospitals Range at baseline§ Effect of SPI1 (99% CI)¶, P value Point estimate favours SPI1
Survey 1 Survey 2† Absolute % change Survey 1 Survey 2† Absolute % change
No of responders Score (SE) No of responders Score (SE) No of responders Score (SE) No of responders Score (SE)
Well structured appraisals within previous 12 months22 23 8046 39 (1) 7260 28 (1) −10 6111 34 (1) 3993 27 (1) −7 27-46 3 (−2 to 8), 0.095 Yes
Working in well structured teams24 8052 40 (1) 7279 37 (1) −3 6088 38 (1) 3961 35 (1) −2 34-52 1 (−4 to 6), 0.510 Yes
Witnessed potentially harmful errors or near misses in previous month 8236 47 (1) 7520 39 (1) −8 6242 48 (1) 4133 44 (1) −4 41-56 5 (−2 to 11), 0.068 No
Work related injury in previous 12 months 8286 22 (0) 7372 19 (0) −3 6246 21 (1) 4023 18 (1) −3 18-26 0 (−4 to 3), 0.854 NA
Work related stress in previous 12 months 8368 34 (1) 7457 33 (1) −1 6340 34 (1) 4094 30 (1) −4 29-39 −5 (−12 to 0), 0.013 Yes
Physical violence from patients/relatives in previous 12 months 8283 13 (0) 7482 11 (0) −2 6290 15 (0) 4117 11 (0) −3 9-18 −3 (−8 to 0), 0.026 Yes
Intention to leave25 8263 3.36 (0.01) 7437 3.29 (0.01) −0.08 6282 3.29 (0.01) 4111 3.21 (0.01) −0.09 2.99-3.51 0.04 (−0.03 to 0.10), 0.139 No
Staff job satisfaction25 8357 3.47 (0.01) 7495 3.37 (0.01) −0.10 6366 3.42 (0.01) 4122 3.34 (0.01) −0.09 3.25-3.57 0.03 (−0.02 to 0.08), 0.132 Yes
Quality of work-life balance25 8249 2.63 (0.01) 7436 2.72 (0.01) 0.10 6330 2.61 (0.01) 4106 2.67 (0.02) 0.06 2.45-2.80 −0.05 (−0.12 to 0.03), 0.106 No
Support from supervisors25 8310 3.45 (0.01) 7477 3.41 (0.01) −0.05 6334 3.36 (0.01) 4109 3.32 (0.01) −0.04 3.18-3.55 0.02 (−0.04 to 0.08)
0.358
Yes
Organisational climate25 26 8302 3.11 (0.01) 7424 2.89 (0.01) −0.22 6267 3.08 (0.01) 4070 2.93 (0.01) −0.15 2.82-3.32 0.08 (0.02 to 0.13), <0.01 Yes

NA=not applicable.

*Survey periods do not map precisely to epochs described in methods section.

†After intervention.

‡First six scores are percentages, simply reflecting proportion of respondents who answered “yes” to single question or set of questions. The five others are on scale of 1-5 and are based on mean of between three and six questions, each of which was scored between 1 and 5 for each respondent. For four of these five scores (quality of work-life balance, staff job satisfaction, support from supervisors, and organisational climate), higher scores are better, except for intention to leave.

§Indicates range of scores across intervention and control hospitals in first survey to give some context for level of change shown. Difference in change and corresponding confidence interval does not necessarily reflect difference in absolute change because of inclusion of covariates in models tested.

¶Values differ from simple subtraction due to rounding.