Table 1 Summary of the response rates and responses to the survey questions by site

Survey Question

Total

n (% of total responses)

HSS

n (% of total responses)

TWH

n (% of total responses)

P-value

Gender, male/female^a

(T:473, HSS:244, TWH:229)

0.22

 Male

187 (40)

103 (42)

84 (37)

 Female

286 (60)

141 (58)

145 (63)

Age, years^b

(T:405, HSS:181, TWH:224)

55 ± 16

53 ± 17

56 ± 16

0.07

Highest educational attainment^a

(T:473, HSS:244, TWH:229)

<  0.001‡

 Less than high school/secondary school

15 (3)

1 (0)

14 (6)

 High school (or equivalent)

88 (19)

33 (14)

55 (24)

 College/University (diploma and/or degree)

365 (77)

208 (85)

157 (69)

 Prefer not to provide this information

5 (1)

2 (1)

3 (1)

Familiar with sleep apnoea?^a

(T:472, HSS:244, TWH:228)

0.03‡

 Yes

421 (89)

225 (92)

196 (86)

 No

51 (11)

19 (8)

32 (14)

Diagnosed with OSA?^a

(T:430, HSS:224, TWH:206)

0.44

 Yes

55 (13)

26 (12)

29 (14)

 No

375 (87)

198 (88)

177 (86)

If diagnosed with OSA, the current treatment being used^a

(T:55, HSS:26, TWH:29)

1.00

 Use CPAP nightly

30 (55)

14 (54)

16 (55)

 Use CPAP sometimes

2 (4)

1 (4)

1 (3)

 Does not use CPAP

4 (7)

2 (8)

2 (7)

 Other treatment (Oral appliances, surgery)

4 (7)

2 (8)

2 (7)

 No treatment

15 (27)

7 (27)

8 (28)

 Short episodes where you stop breathing whilst asleep

386 (82)

207 (85)

179 (79)

<  0.001‡

 Feeling very tired during the daytime

312 (67)

164 (68)

148 (65)

0.56

 Sudden awakening during sleep with choking or gasping

311 (66)

164 (68)

147 (65)

0.49

 Loud persistent snoring

306 (65)

167 (69)

139 (61)

0.08

 Checked off all four of the above symptoms

208 (44)

112 (46)

96 (42)

0.38

OSA may affect your long-term health^a

(T:470, HSS:243, TWH:227)

0.16

 True

430 (91)

227 (93)

203 (89)

 False

11 (2)

6 (2)

5 (2)

 Cannot decide

29 (6)

10 (4)

22 (8)

OSA is treatable by different therapies^a

(T:469, HSS:243,TWH:226)

0.02‡

 True

426 (91)

222 (91)

204 (90)

 False

6 (1)

6 (2)

0

 Cannot decide

37 (8)

15 (6)

22 (10)

Hypothetical Scenario – Comprehension Questions^a

(T:467, HSS:241, TWH:226)

<  0.001‡

 All 3 questions correct

344 (74)

188 (78)

156 (69)

 2/3 questions correct

92 (19)

46 (19)

46 (20)

 1 question correct

19 (4)

7 (3)

12 (5)

 0 questions correct

3 (1)

0

3 (1)

 “Cannot Decide” for all 3 questions

9 (2)

0

9 (4)

Hypothetical Scenario – Proceed/Delay/Physician Decides^a

(T:453, HSS:237, TWH:216)

<  0.001‡

 Proceed with surgery

111 (25)

47 (19)

64 (29)

 Delay surgery

201 (44)

126 (53)

75 (35)

 Let my physician decide

141 (31)

64 (27)

77 (36)

If “Yes” to Delaying Surgery: length of delay tolerated^a

(T:192, HSS:122, TWH:70)

0.41

 Up to 2 weeks

49 (26)

34 (28)

15 (21)

 Up to 1 month

66 (34)

38 (31)

28 (40)

 Up to 2 months

77 (40)

50 (41)

27 (39)

When making a decision as to which method of treatment you most prefer, how do you rate the importance of the following?^b(1 = least important, 5 = most important)

(T:448, HSS: 235, TWH: 212)

Mean Rating (Total)

Mean Rating (HSS)

Mean Rating (TWH)

P-value

 Lowest risk of complications during surgery

4.74 ± 0.7

4.82 ± 0.6

4.67 ± 0.7

0.02‡

 Lowest risk of postoperative complications

4.70 ± 0.7

4.82 ± 0.6

4.57 ± 0.8

<  0.001‡

 Lowest risk of being transferred to ICU

4.61 ± 0.9

4.65 ± 0.8

4.57 ± 0.9

0.33

 Being involved in decision making process

4.46 ± 0.9

4.48 ± 0.9

4.44 ± 0.9

0.67

 Shortest length of stay at the hospital

3.64 ± 1.3

3.69 ± 1.2

3.57 ± 1.3

0.33