Table 2

GPs' out-of-hours referral rates 2001–2004.

VariableReferral rate, %UOR (95% CI)P-valueAOR (95% CI)P-value
Sex0.0080.007
 Male8.6 (1884/21821)RGRG
 Female11.2 (1341/11987)1.33 (1.08 to 1.65)1.37 (1.09 to 1.72)
Years since registration as doctor in UK0.0100.27
 0–912.4 (434/3491)1.38 (1.05 to 1.81)1.20 (0.89 to 1.62)
 10–199.4 (1159/12363)1.00 (0.79 to 1.27)0.95 (0.76 to 1.21)
 20–299.4 (1344/14371)RGRG
 ≥308.0 (288/3583)0.85 (0.63 to 1.13)0.88 (0.69 to 1.12)
Number of out-of-hours face-to-face
 contacts over 3 years0.340.77
  20–14910.7 (448/4203)1.18 (0.95 to 1.47)1.07 (0.86 to 1.32)
  150–3999.2 (1771/19267)RGRG
  ≥4009.7 (1006/10338)1.06 (0.82 to 1.38)0.95 (0.73 to 1.24)
Employment status0.0420.30
 Registrar14.9 (37/248)1.73 (1.09 to 2.76)1.45 (0.90 to 2.34)
 Locum10.6 (762/7196)1.17 (0.92 to 1.48)0.96 (0.72 to 1.29)
 Practice-based9.2 (2426/26364)RGRG
Time of day of out-of-hours contact<0.001<0.001
 Day (7am–7pm)8.0 (1377/17247)RGRG
 Evening (7–11 pm)10.5 (1098/10419)1.36 (1.23 to 1.50)1.37(1.25 to 1.50)
 Night (11pm–7am)12.2 (750/6142)1.60 (1.30 to 1.98)1.51 (1.13 to 2.02)
Place of out-of-hours contact<0.001<0.001
 Surgery8.1 (2087/25649)RGRG
 Home visit13.9 (1138/8159)1.83 (1.62 to 2.07)1.76 (1.54 to 2.00)
  • Referral rates have been calculated as a percentage of the total number of contacts in the 3-year period. Odds ratios have been calculated using STATA (version 7) with the cluster subcommand to use robust standard errors. UOR is calculated using just the variable in question and the constant term in the model, the AOR controls for the sex of the GP, the time and the place of the contact. AOR = adjusted odds ratio. RG = reference group. UOR = unadjusted odds ratio.