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Table 3 Persistent headache clinical characteristics after COVID-19 in 421 participants in Latin America

From: New daily persistent headache after SARS-CoV-2 infection in Latin America: a cross-sectional study

Persistent headache clinical characteristics

All (n = 421, 100%)

NDPH (n = 106, 25.2%)

Non-NDPH (n = 315, 74.8%)

p value

Time of onset, n (%)

   

0.744a

 < 2nd week of COVID-19

290 (68.9)

70 (66)

220 (69.8)

 

 2nd − 4th week of COVID-19

64 (15.2)

17 (16)

47 (14.9)

 

 > 4th week of COVID-19

67 (15.9)

19 (17.9)

48 (15.2)

 

Type of onset, n (%)

   

0.476a

 Insidious

278 (66)

73 (68.9)

205 (65.1)

 

 Sudden

143 (34)

33 (31.1)

110 (34.9)

 

Side, n (%)

   

0.472a

 Bilateral

286 (67.9)

75 (70.8)

211 (67)

 

 Unilateral

135 (32.1)

31 (29.2)

104 (33)

 

Location, yes (%)

    

 Frontal

212 (50.4)

51 (48.1)

161 (51.1)

0.593a

 Parietal

165 (39.2)

41 (38.7)

124 (39.4)

0.9a

 Periocular

163 (38.7)

48 (45.3)

115 (36.5)

0.109a

 Occipital

135 (32.1)

46 (43.4)

89 (28.3)

0.004a

 Temporal

106 (25.2)

24 (22.6)

82 (26)

0.487a

 Vertex

74 (17.6)

20 (18.9)

54 (17.1)

0.686a

Intensity (VAS) score, median (IQR), points

7 (3)

8 (2)

7 (3)

0.007b

Intensity (VAS) by severity, n (%)

   

0.011a

 Mild/Moderate

167 (39.7)

31 (29.2)

136 (43.2)

 

 Severe/Unbearable

254 (60.3)

75 (70.8)

179 (56.8)

 

Character, yes (%)

    

 Oppressive

248 (58.9)

63 (59.4)

185 (58.7)

0.899a

 Pulsatile

167 (39.7)

48 (45.3)

119 (37.8)

0.172a

 Dull

120 (28.5)

28 (26.4)

92 (29.2)

0.582a

 Lancinating

111 (26.4)

34 (32.1)

77 (24.4)

0.123a

 Burning

39 (9.3)

18 (17)

21 (6.7)

0.002a

Irradiation, n (%)

   

0.048a

 No

157 (37.3)

31 (29.2)

126 (40)

 

 Yes

264 (62.7)

75 (70.8)

189 (60)

 

  Neck, yes (%)

162 (38.5)

49 (46.2)

113 (35.9)

0.058a

  Face, yes (%)

126 (29.9)

38 (35.8)

88 (27.9)

0.124a

  Shoulders, yes (%)

97 (23)

30 (28.3)

67 (21.3)

0.137a

  Other, yes (%)

4 (1)

3 (2.8)

1 (0.3)

0.051c

Duration, n (%)

   

0.077a

 < 3 months

214 (50.8)

46 (43.4)

168 (53.3)

0.01a

  4–8 weeks

86 (40.2)

15 (32.6)

71 (42.3)

 

  5–6 weeks

26 (12.1)

4 (8.7)

22 (13.1)

 

  6–7 weeks

16 (7.5)

0 (0)

16 (9.5)

 

  7–8 weeks

28 (13.1)

6 (13)

22 (13.1)

 

  8 weeks to 3 months

58 (13.1)

21 (45.7)

37 (22)

 

 ≥ 3 months

207 (49.2)

60 (56.6)

147 (46.7)

0.035a

  3–6 months

64 (30.9)

25 (41.7)

39 (26.5)

 

  6–9 months

38 (18.4)

14 (23.3)

24 (16.3)

 

  9–12 months

24 (11.6)

4 (6.7)

20 (13.6)

 

  > 12 months

81 (39.1)

17 (28.3)

64 (43.5)

 

Onset schedule, n (%)

   

0.004a

 Any time of day

243 (57.7)

71 (67)

172 (54.6)

 

 During the morning

81 (19.2)

18 (17)

63 (20)

 

 During the afternoon

57 (13.6)

4 (3.8)

53 (16.8)

 

 During the evening

40 (9.5)

13 (12.3)

27 (8.6)

 

Pain attenuation, n (%)

   

0.006a

 No

22 (5.2)

11 (10.4)

11 (3.5)

 

 Yes

399 (94.8)

95 (89.6)

304 (96.5)

 

  Analgesics, yes (%)

340 (80.8)

79 (74.5)

261 (82.9)

0.06a

  Rest, yes (%)

114 (27.1)

25 (23.6)

89 (28.3)

0.349a

  Sleep, yes (%)

109 (25.9)

24 (22.6)

85 (27)

0.377a

Pain exacerbation, n (%)

   

0.553a

 No

83 (19.7)

23 (21.7)

60 (19)

 

 Yes

338 (80.3)

83 (78.3)

255 (81)

 

  Valsalva maneuvers, yes (%)

190 (45.1)

49 (46.2)

141 (44.8)

0.793a

  Head movements, yes (%)

177 (42)

38 (35.8)

139 (44.1)

0.135a

  Walking, yes (%)

78 (18.5)

25 (23.6)

53 (16.8)

0.121a

  1. aPearson’s chi-square test; bMann-Whitney U test; cFisher’s exact test