Skip to main content

Table 2 Characteristics of 1269 patients with symptoms suggestive of TIA or stroke calling the OHS-PC

From: Accuracy of telephone triage in patients suspected of transient ischaemic attack or stroke: a cross-sectional study

 

High NTS urgency

n = 770 (60.7%)

Low NTS urgency

n = 499 (39.3%)

P-value#

Patient characteristics:

 Median age in years (IQR)

73.5 (59.0–84.0)

69.0 (55.0–82.0)

< 0.001

 Female sex

441 (57.3)

281 (56.3)

0.736

 Family history of CVD (n = 36)

14 (82.4)

13 (68.4)

0.451&

Medical history:

 Cardiovascular disease (n = 882)

421 (79.1)

259 (74.0)

0.076

 TIA (n = 637)

116 (29.7)

60 (24.4)

0.147

 Stroke (n = 637)

113 (28.9)

60 (24.4)

0.213

 Coronary artery disease (n = 303)

36 (20.6)

18 (14.1)

0.144

 Arrhythmia (n = 292)

32 (19.5)

25 (19.5)

0.997

 Valvular heart disease (n = 260)

16 (10.9)

9 (8.0)

0.429

 Heart failure (n = 263)

14 (9.5)

10 (8.7)

0.831

 Epilepsy (n = 233)

15 (11.6)

9 (8.7)

0.458

 Migraine (n = 102)

17 (27.0)

14 (35.9)

0.342

Cardiovascular risk factors:

14 (9.5)

10 (8.7)

0.831

 Hypertension (n = 421)

121 (50.2)

85 (47.2)

0.544

 Hypercholesterolemia or use of statins (n = 395)

95 (43.0)

75 (43.1)

0.981

 Diabetes mellitus (n = 417)

87 (36.7)

63 (35.0)

0.719

Cardiovascular medication:

 Antithrombotics (n = 939)

290 (48.7)

149 (43.4)

0.123

 Other cardiovascular medication (n = 764)

253 (57.55)

178 (54.9)

0.480

Call characteristics:

 Median call duration in min:sec (IQR)

06:32 (04:43–08:54)

07:59 (05:54–10:50)

< 0.001

 Median time for caller’s introduction in min:sec (IQR)

00:19 (00:12–00:27)

00:20 (00:13–00:29)

0.189

 Initial call by someone else than the patient

621 (80.6)

342 (68.5)

< 0.001

 Triage nurse consulted the general practitioner

449 (58.3)

305 (61.1)

0.319

Main NTS complaint chosen by triage nurse

 Neurological deficit

587 (76.2)

220 (44.1)

< 0.001

 Dizziness

21 (2.7)

87 (17.4)

< 0.001

 Headache

23 (3.0)

28 (5.6)

0.020

 Odd behavior

21 (2.7)

18 (3.6)

0.375

 Syncope

20 (2.6)

9 (1.8)

0.355

 Vision problem

2 (0.3)

25 (5.0)

< 0.001&

 Leg or arm problem

11 (1.4)

34 (6.8)

< 0.001

 Other^

85 (11.0)

78 (15.6)

0.017

Symptoms mentioned during the call

 Decreased or loss of consciousness (n = 1103)

49 (7.4)

21 (4.8)

0.081

 Face drooping (n = 713)

258 (54.3)

93 (39.1)

< 0.001

 Arm weakness (n = 772)

254 (51.0)

77 (28.1)

< 0.001

 Leg weakness (n = 653)

201 (49.0)

85 (35.0)

< 0.001

 Sensory disturbances (n = 375)

192 (89.7)

150 (93.2)

0.243

 Communication problem in general (n = 769)

413 (80.8)

187 (72.5)

0.008

 Dysarthria (n = 416)

181 (65.1)

76 (55.1)

0.047

 Dysphasia (n = 419)

163 (59.1)

72 (50.3)

0.089

 Vision problem in general (n = 184)

68 (78.2)

82 (84.5)

0.266

 Blurry vision (n = 74)

27 (77.1)

27 (69.2)

0.444

 Diplopia (n = 74)

14 (63.6)

23 (44.2)

0.127

 Reduced vision (n = 62)

15 (53.6)

22 (64.7)

0.374

 Headache (n = 497)

147 (57.0)

140 (58.6)

0.718

 Loss of balance/motor coordination (ataxia) (n = 236)

130 (86.1)

66 (77.6)

0.097

 Dizziness (n = 312)

120 (82.2)

143 (86.1)

0.338

 Seizure (n = 11)

4 (66.7)

3 (60.0)

0.819&

 Short term memory loss (n = 68)

33 (76.7)

21 (84.0)

0.476

 Shortness of breath (n = 403)

62 (24.4)

25 (16.8)

0.072

Autonomic nervous system associated symptoms

 Sweating (n = 208)

47 (36.7)

45 (56.3)

0.006

 Nausea or vomiting (n = 311)

84 (61.8)

94 (53.7)

0.155

 Pallor (n = 255)

54 (32.7)

27 (30.0)

0.655

 Ashen skin (n = 198)

18 (14.1)

12 (17.1)

0.563

 (Feeling of nearly) fainting (n = 1103)

57 (8.6)

41 (9.3)

0.680

Course of symptoms

Onset of symptoms:

 Per acute (seconds) (n = 211)

52 (44.1)

56 (60.2)

0.020

 Acute (minutes) (n = 211)

46 (39.0)

23 (24.7)

0.028

 Gradually (hours) (n = 211)

20 (16.9)

14 (15.1)

0.710

 Duration of symptoms ≤4.5 h (n = 986)

381 (61.4)

203 (55.6)

0.077

 Symptoms still present at time of calling (n = 1254)

716 (93.4)

438 (89.9)

0.030

Other characteristics

 Caller expresses concern (n = 628)

334 (90.3)

248 (96.1)

0.006

 Patient never experienced similar symptoms before (n = 368)

104 (49.8)

68 (42.8)

0.183

 Recognition of symptoms:

 TIA (n = 368)

40 (19.1)

26 (16.4)

0.490

 Stroke (n = 368)

25 (12.0)

16 (10.1)

0.566

  1. N number (first column) stands for number of patients in which information on the variable of that row is known
  2. NTS Netherlands Triage Standard, IQR interquartile range, CVD Cardiovascular disease, TIA Transient ischaemic attack
  3. High NTS urgency: U1 and U2; Low NTS urgency: U3, U4 and U5
  4. *Concerns all cardiovascular medication with the exception of antithrombotics; #Pearson Chi Square Test for categorical variables and Mann-Whitney U Test for not normally distributed continuous variables; &Fisher’s Exact Test for categorical variables; ^Amongst others: vomiting, dyspnea, neck symptoms, insult, disability problems (‘D from ABCD’)