GP consult | ||||||
---|---|---|---|---|---|---|
Category | n | n | Per cent | Adjusted OR* | 95% CI* | p Value† |
Sex | 0.79 | |||||
Woman | 152 | 64 | 42 | 1.10 | 0.56 to 2.15 | |
Man | 255 | 111 | 44 | 1.00 | (ref) | |
Age | 0.77 | |||||
<60 | 78 | 28 | 36 | 1.38 | 0.58 to 3.30 | |
60–69 | 108 | 42 | 39 | 1.13 | 0.57 to 2.28 | |
70–79 | 150 | 75 | 50 | 1.00 | (ref) | |
80+ | 71 | 30 | 42 | 1.50 | 0.62 to 3.65 | |
Country of birth | 0.09 | |||||
Australia | 320 | 141 | 44 | 1.00 | (ref) | |
Other | 81 | 30 | 37 | 0.50 | 0.22 to 1.12 | |
Unknown | 6 | 4 | 67 | Not incl. | Not incl. | |
Language spoken at home | 0.41 | |||||
English | 377 | 163 | 43 | 1.00 | (ref) | |
Non-English | 30 | 12 | 40 | 0.59 | 0.17 to 2.06 | |
Place of residence at diagnosis | 0.62 | |||||
Metropolitan | 186 | 75 | 40 | 1.00 | (ref) | |
Other urban | 103 | 45 | 44 | 0.63 | 0.24 to 1.62 | |
Rural | 118 | 55 | 47 | 1.65 | 0.58 to 4.69 | |
Type of housing | 0.93 | |||||
House | 296 | 130 | 44 | 1.00 | (ref) | |
Flat/unit | 50 | 19 | 38 | 1.17 | 0.46 to 2.93 | |
House on farm | 28 | 12 | 43 | 1.22 | 0.40 to 3.66 | |
Elderly accommodation | 26 | 11 | 42 | 0.79 | 0.24 to 2.58 | |
Other/unspecified | 7 | 3 | 43 | Not incl. | Not incl. | |
Socioeconomic status | 0.27 | |||||
Least disadvantaged quintile | 143 | 54 | 38 | 1.00 | (ref) | |
Quintile 2 | 64 | 28 | 44 | 1.65 | 0.58 to 4.69 | |
Quintile 3 | 126 | 55 | 44 | 1.17 | 0.43 to 3.21 | |
Quintile 4 | 58 | 28 | 48 | 2.40 | 0.87 to 6.60 | |
Most disadvantaged quintile | 16 | 10 | 63 | 3.18 | 0.63 to 16.01 | |
Highest education level attained | 0.27 | |||||
No school certificate/other | 48 | 22 | 46 | 1.20 | 0.47 to 3.09 | |
School/intermediate certificate | 102 | 41 | 40 | 1.00 | (ref) | |
Higher school/leaving certificate | 28 | 12 | 43 | 1.49 | 0.47 to 4.67 | |
Trade/apprenticeship | 56 | 21 | 38 | 1.01 | 0.40 to 2.55 | |
Certificate/diploma | 83 | 36 | 43 | 1.47 | 0.63 to 3.43 | |
University degree or higher | 80 | 37 | 46 | 2.94 | 1.19 to 7.26 | |
Unspecified | 10 | 6 | 60 | Not incl. | Not incl. | |
Marital status | 0.08 | |||||
Married/living as married | 288 | 120 | 42 | 1.00 | (ref) | |
Single/divorced/separated | 51 | 28 | 55 | 2.65 | 1.11 to 6.30 | |
Widowed | 65 | 26 | 40 | 1.03 | 0.44 to 2.39 | |
Unspecified | 3 | 1 | 33 | Not incl. | Not incl. | |
Income level | 0.11 | |||||
<$20K p.a. | 112 | 51 | 46 | 1.00 | (ref) | |
$20K–<$40K p.a. | 83 | 45 | 54 | 1.79 | 0.76 to 4.25 | |
$40K–<$70K p.a. | 62 | 22 | 35 | 0.68 | 0.26 to 1.75 | |
$70K+ p.a. | 52 | 15 | 29 | 0.56 | 0.19 to 1.68 | |
Unspecified | 98 | 42 | 43 | 0.74 | 0.33 to 1.67 | |
Health insurance | 0.19 | |||||
Private with extras | 190 | 83 | 44 | 1.00 | (ref) | |
Private no extras | 70 | 26 | 37 | 0.45 | 0.21 to 0.97 | |
DVA/healthcare card | 101 | 46 | 46 | 1.20 | 0.55 to 2.62 | |
None of these | 37 | 16 | 43 | 0.67 | 0.24 to 1.85 | |
Missing | 9 | 4 | 44 | 1.24 | 0.24 to 6.47 | |
BMI‡ | 0.21 | |||||
Underweight/normal (<25 kg/m2) | 155 | 59 | 38 | 1.00 | (ref) | |
Overweight (25–≤30 kg/m2) | 157 | 69 | 44 | 1.56 | 0.83 to 2.93 | |
Obese/morbidly obese (≥30 kg/m2) | 66 | 31 | 47 | 1.30 | 0.58 to 2.94 | |
Null/not specified | 29 | 16 | 55 | 2.93 | 0.98 to 8.74 | |
Smoking status | 0.05 | |||||
Never smoker | 203 | 80 | 39 | 1.00 | (ref) | |
Ever smoker | 204 | 95 | 47 | 1.81 | 1.01 to 3.26 | |
Self-reported health status | 0.002 | |||||
Good–excellent | 307 | 115 | 37 | 1.00 | (ref) | |
Fair/poor | 78 | 47 | 60 | 2.76 | 1.30 to 5.82 | |
Unspecified | 22 | 13 | 59 | 5.60 | 1.59 to 19.81 | |
Cardiovascular disease | 0.11 | |||||
Yes | 47 | 26 | 55 | 2.09 | 0.85 to 5.13 | |
No | 360 | 149 | 41 | 1.00 | (ref) | |
COPD | 0.04 | |||||
Yes | 29 | 10 | 34 | 0.30 | 0.09 to 0.95 | |
No | 378 | 165 | 44 | 1.00 | (ref) | |
Diabetes | 0.001 | |||||
Yes | 50 | 33 | 66 | 5.15 | 2.02 to 13.16 | |
No | 357 | 142 | 40 | 1.00 | (ref) | |
Other key comorbidities | 0.88 | |||||
Yes | 56 | 26 | 46 | 0.94 | 0.40 to 2.18 | |
No | 351 | 149 | 42 | 1.00 | (ref) | |
Family history of CRC | 0.51 | |||||
Yes | 75 | 37 | 49 | 1.27 | 0.63 to 2.57 | |
No | 332 | 138 | 42 | 1.00 | (ref) | |
Disease stage | 0.08 | |||||
Localised | 185 | 73 | 39 | 1.00 | (ref) | |
Regional | 176 | 76 | 43 | 1.66 | 0.91 to 3.02 | |
Distant metastases | 27 | 13 | 48 | 1.57 | 0.47 to 5.19 | |
Unknown | 19 | 13 | 68 | 5.05 | 1.35 to 18.91 | |
Cancer site | 0.52 | |||||
Colon | 265 | 114 | 43 | 1.00 | (ref) | |
Rectum | 142 | 61 | 43 | 1.21 | 0.68 to 2.18 | |
Year of diagnosis | 0.64 | |||||
2004 | 43 | 17 | 40 | 1.24 | 0.46 to 3.36 | |
2005 | 113 | 43 | 38 | 0.93 | 0.44 to 1.93 | |
2006 | 111 | 56 | 50 | 1.46 | 0.72 to 2.95 | |
2007 | 140 | 59 | 42 | 1.00 | (ref) | |
Timing of CRC diagnosis relative to the 45 and Up Study questionnaire | 0.01 | |||||
Before (prevalent) | 327 | 131 | 40 | 0.35 | 0.16 to 0.75 | |
After (incident) | 80 | 44 | 55 | 1.00 | (ref) | |
Specialist consultation between colonoscopy and surgery | <0.0001 | |||||
Yes | 285 | 156 | 55 | 17.64 | 7.71 to 40.34 | |
No | 122 | 19 | 16 | 1.00 | (ref) |
*Adjusted for all other variables in this table.
†Overall p value from a multivariable logistic regression.
‡Calculated from self-reported weight (kg)/height (m)2.
BMI, body mass index; CRC, colorectal cancer; COPD, chronic obstructive pulmonary disease; DVA, Department of Veterans’ Affairs; GP, general practitioner; Not incl.: this category was not included in logistic regression (n=26 overall); Ref: reference category.