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Table 4 Adjusted odds ratios for non-response by procedure

From: Factors associated with non-response in routine use of patient reported outcome measures after elective surgery in England

  Adjusted odds ratio (95% confidence interval)
  Hip replacement Knee replacement Hernia repair VV surgery
Socio-demographic characteristics
Sex
Female 1.00 1.00 1.00 1.00
Male 1.12 (1.05-1.19) 1.15 (1.09-1.22) 1.03 (0.95-1.11) 1.35 (1.25-1.46)
Age category (years)
Under 55 3.06 (2.78-3.37) 3.01 (2.72-3.32) 6.05 (5.49-6.67) 4.08 (3.29-5.06)
55-64 1.48 (1.35-1.61) 1.50 (1.38-1.62) 1.81 (1.63-2.00) 1.50 (1.21-1.88)
65-74 0.97 (0.90-1.05) 1.05 (0.98-1.13) 1.05 (0.95-1.17) 1.13 (0.89-1.42)
75 and over 1.00 1.00 1.00 1.00
Ethnicity
White 1.00 1.00 1.00 1.00
Non-white 1.58 (1.32-1.88) 2.08 (1.89-2.31) 1.24 (1.11-1.38) 1.25 (1.08-1.47)
IMD quintile
Most deprived 1.55 (1.40-1.72) 1.47 (1.34-1.62) 1.86 (1.71-2.03) 1.49 (1.31-1.69)
2nd 1.34 (1.21-1.47) 1.29 (1.17-1.41) 1.60 (1.47-1.73) 1.21 (1.07-1.38)
3 rd 1.12 (1.02-1.23) 1.18 (1.07-1.29) 1.25 (1.15-1.36) 1.13 (1.00-1.28)
4th 1.04 (0.95-1.14) 1.06 (0.97-1.17) 1.13 (1.04-1.23) 0.98 (0.87-1.12)
Least deprived 1.00 1.00 1.00 1.00
Living arrangements
Not living alone 1.00 1.00 1.00 1.00
Living alone 1.27 (1.18-1.36) 1.21 (1.13-1.29) 1.16 (1.08-1.25) 1.11 (0.99-1.23)
Assisted in completing questionnaire
Not assisted 1.00 1.00 1.00 1.00
Assisted 1.49 (1.39-1.60) 1.67 (1.56-1.79) 1.53 (1.41-1.66) 1.26 (1.10-1.46)
Clinical characteristics
Previous surgery
No 1.00 1.00 1.00 1.00
Yes 1.42 (1.30-1.55) 1.36 (1.25-1.49) 1.14 (1.05-1.23) 1.05 (0.97-1.14)
Duration of symptoms*
Up to 5 years 1.00 1.00 1.00 1.00
> 5 years 1.13 (1.05-1.21) 1.03 (0.98-1.09) 1.26 (1.19-1.32) 0.84 (0.78-0.92)
Comorbidities
None 1.00 1.00 1.00 1.00
1 1.06 (0.99-1.13) 1.00 (0.94-1.07) 0.91 (0.85-0.97) 1.01 (0.93-1.10)
2 1.25 (1.15-1.37) 1.04 (0.96-1.12) 0.95 (0.86-1.04) 0.99 (0.86-1.14)
3 or more 1.45 (1.30-1.63) 1.24 (1.12-1.37) 1.19 (1.06-1.34) 1.14 (0.96-1.35)
Condition-specific PROM
per 10 point worse score 1.17 (1.11-1.24) 1.15 (1.09-1.21) - 1.06 (1.02-1.11)
EQ-5D index score
per 0.1 point worse score 1.04 (1.03-1.06) 1.05 (1.04-1.06) 1.06 (1.05-1.08) 1.07 (1.05-1.09)
Organisational factors
Administration of pre-operative questionnaire**
On admission 1.06 (0.96-1.16) 1.06 (0.97-1.16) 1.03 (0.96-1.10) 1.11 (1.02-1.21)
Before admission 1.00 1.00 1.00 1.00
Provider type     
NHS 1.14 (1.06-1.24) 1.24 (1.15-1.34) 1.07 (1.00-1.15) 1.08 (0.94-1.23)
Independent 1.00 1.00 1.00 1.00
Provider recruitment***
per 20% point increase 1.02 (0.98-1.07) 1.03 (0.99-1.06) 1.02 (0.98-1.07) 0.99 (0.94-1.04)
  1. * up to and more than 1 year for hernia repair
  2. ** linked records only
  3. *** restricted to providers with at least 50 eligible patients