Table 1

Variations in length of stay by patient sociodemographic variables

VariableNumber of admissions (%)Median LOS (95% CI)Mean LOS (95% CI)Unadjusted HR (95% CI)pp For PH testAdjusted HR† (95% CI)pp For PH test*
Age group
 40–59410 (17.0%)5 (5 to 6)6.96 (6.13 to 7.80)11
 60–69741 (30.7%)5 (5 to 6)7.11 (6.57 to 7.65)0.95 (0.79 to 1.15)0.60100.58420.90 (0.77 to 1.05)0.18300.8206
 70–79788 (32.7%)6 (6 to 7)10.92 (9.77 to 12.07)0.71 (0.58 to 0.86)<0.00010.76680.69 (0.59 to 0.82)<0.00010.2508
 80+471 (19.5%)7 (7 to 8)14.51 (11.84 to 17.18)0.58 (0.48 to 0.71)<0.00010.97450.59 (0.50 to 0.70)<0.00010.8858
 Total2410 (100%)6 (6 to 6)9.79 (9.09 to 10.50)0.6999
Gender
 Male1152 (47.8%)5 (5 to 6)9.46 (8.25 to 10.66)1
 Female1258 (52.2%)7 (6 to 7)10.09 (9.33 to 10.85)0.85 (0.76 to 0.96)0.0070<0.0001*
 Total2410 (100%)6 (6 to 6)9.79 (9.09 to 10.50)<0.0001*
IMD quintile‡
 Second51 (2.1%)4 (3 to 5)5.29 (4.11 to 6.46)11
 Third311 (12.9%)6 (5 to 6)10.08 (8.22 to 11.95)0.62 (0.46 to 0.83)0.00100.27420.65 (0.47 to 0.89)0.00800.5542
 Fourth642 (26.6%)6 (6 to 7)11.76 (9.85 to 13.67)0.57 (0.44 to 0.73)<0.00010.57800.57 (0.42 to 0.77)<0.00010.3118
 Fifth1406 (58.3%)6 (6 to 6)8.95 (8.30 to 9.60)0.65 (0.51 to 0.84)0.00100.90770.59 (0.43 to 0.82)0.00100.4996
 Total2410 (100.0%)6 (6 to 6)9.79 (9.09 to 10.49)0.2134
  • *p for PH test in the exploratory multivariate model was <0.0001.

  • LOS,length of stay; PH test, proportional hazard test.

  • †HR adjusted for all the main variables.

  • ‡There are no first Index of Multiple Deprivation national quintile areas in Blackpool.