Table 4 Results of Multivariate quantile regression analysis for predictors of stroke direct costs

β_j

95% CI of β_j

β_j

95% CI of β_j

β_j

95% CI of β_j

β_j

95% CI of β_j

β_j

95% CI of β_j

Intercept

1.152***

(1.150,1.155)

1.702***

(1.601,1.721)

2.740***

(2.709,2.745)

2.870***

(2.670,2.900)

1.587***

(1.580,1.600)

Female-gender

1.020***

(1.000,1.300)

2.100***

(1.999,2.345)

1.999***

(1.980,2.000)

0.987***

(0.897,1.12)

2.981***

(2.890,3.008)

Age group

55–75 years

1.217***

(1.200,1.220)

1.113***

(1.110,1.118)

1.563***

(1.556,1.600)

1.946***

(1.941,1.956)

1.008***

(1.000,1.113)

Age group

76–98 years

1.531***

(1.430,1.630)

1.804***

(1.800,1.987)

1.738***

(1.730,1.745)

1.940***

(1.899,1.989)

1.227***

(1.117,1.312)

Indian/Asian-race

2.000***

(0.999,2.10)

1.093***

(1.090,1.246)

1.738***

(1.678,1.741)

1.357***

(1.346,1.455)

1.880***

(1.788,1.908)

Black-race

1.551***

(1.457,1.601)

2.500***

(2.167,2.560)

1.986***

1.980,2.100)

1.984***

(1.982,1.999)

1.315***

(1.301,1.412)

Coloured-race

2.698

(−2.598,2.708)

2.470

(−2.430,2.500)

1.476

(−1.46,1.56)

3.423

(−3.404,3.523)

1.553

(−1.550,1.555)

Hypertension-yes

3.249***

(3.200,3.250)

2.157***

(2.100,2.200)

3.419***

(3.314,3.519)

2.528***

(2.428,2.556)

3.230***

(3.123,3.340)

Cholesterol-yes

2.511***

(1.519,2.545)

2.612***

(2.610,2.810)

2.510***

(2.455,2.567)

2.257***

(2.250,2.307)

1.049***

(1.044,1.056)

Heart problems-yes

3.149***

(3.129,3.250)

2.418***

(2.319,2.420)

2.981***

(2.980,3.100)

3.201***

(3.199,3.389)

2.295***

(2.195,2.305)

Diabetes-yes

4.213***

(4.205,5.200)

3.214***

(3.115,3.250)

2.846***

(2.840,2.855)

2.589***

(2.458,2.609)

3.553***

(3.500,3.633)

Hospitalisation-cost

4.189***

(4.109,4.190)

1.989***

(1.900,2.109)

1.000***

(0.899,1.201)

1.283***

(1.183,1.294)

2.788***

(2.688,2.808)

Outpatient-cost

1.000***

(0.998,1.100)

1.715***

(1.700,1.812)

1.936***

(1.914,1.956)

2.415***

(2.399,2.546)

1.607***

(1.606,1.610)

Medication-cost

1.486***

(1.398,1.506)

1.416***

(1.400,1.420)

1.274***

(1.266,1.298)

1.117***

(1.100,1.207)

1.775***

(1.700,1.805)

Physiotherapy-cost

1.186***

(1.109,1.190)

1.065***

(1.054,1.070)

2.902***

(2.900,2.912)

2.889***

(2.880,2.909)

1.725***

(1.720,1.743)

Speech therapy-cost

1.026***

(0.978,1.342)

1.817***

(1.619,1.817)

1.967***

(1.890,2.070)

2.129***

(2.109,2.234)

1.725***

(1.712,1.730)