Table 1.
Predictors of those who do not return their questionnaire after referral
| Whole population | Questionnaire returned | Questionnaire not returned | P Value | |
|---|---|---|---|---|
|
Number of patients |
502 |
271 |
231 |
- |
|
Age | ||||
| Mean (SD) age (yrs) |
44.3 (13.8) |
45.2 (13.7) |
43.3 (13.8) |
0.14 |
| < 35 years, % (n) |
27.49 (138) |
26.2 (71) |
29.0 (67) |
0.71 |
| 35-44 years, % (n) |
24.70 (124) |
22.88 (62) |
26.84 (62) |
0.61 |
| 45-54 years, % (n) |
23.31 (117) |
23.62 (64) |
22.94 (53) |
0.08 |
| ≥55 years, % (n) |
24.5 (123) |
27.31 (74) |
21.21 (49) |
0.08 |
|
Female gender, % (n) |
69.3 (348) |
70.8 (192) |
67.5 (156) |
0.42 |
|
Rural postcode, % (n) |
33.1 (166) |
35.4 (96) |
30.3 (70) |
0.22 |
|
Mean IRSD Decile (SD) |
3.51 (2.54) |
3.56 (2.51) |
3.46 (2.59) |
0.67 |
|
GP referral, % (n) |
82.3 (413) |
86.0 (233) |
77.9 (180) |
0.0185 |
|
Mean weight at referral (kg) (SD) |
141.1 (29.1) |
140.7 (29.2) |
141.7 (29.0) |
0.92 |
|
(Weights recorded for 303 patients) | ||||
|
Mean BMI at referral (SD) |
48.6 (0.47) |
48.3 (0.63) |
49.0 (0.72) |
0.40 |
|
(BMI recorded for 350 patients) | ||||
|
Comorbidities, % (n) | ||||
| Hypertension |
26.1 (131) |
28.4 (77) |
23.4 (54) |
0.20 |
| High cholesterol |
14.1 (71) |
16.2 (44) |
11.7 (27) |
0.15 |
| Hypothyroidism |
10.2 (51) |
9.2 (25) |
11.3 (26) |
0.45 |
| OSA |
16.5 (83) |
18.8 (51) |
13.9 (32) |
0.14 |
| IHD |
3.8 (19) |
2.6 (7) |
5.2 (12) |
0.13 |
| Depression |
25.7 (129) |
27.3 (74) |
23.8 (55) |
0.37 |
| DM |
29.9 (150) |
33.6 (91) |
25.5 (59) |
0.0499 |
| Mean total no. of comorbidities (SD) | 1.26 (1.25) | 1.36 (1.23) | 1.15 (1.27) | 0.0557 |
SD standard deviation, IRSD index of relative socioeconomic disadvantage, OSA obstructive sleep apnea, IHD ischaemic heart disease, DM diabetes mellitus.