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. Author manuscript; available in PMC: 2021 May 1.
Published in final edited form as: BJOG. 2020 Nov 19;128(6):1077–1086. doi: 10.1111/1471-0528.16562

Table 1.

Demographic characteristics of women by exposed and control groups 1 and 2

Characteristic Exposed
group
CHIKV
infection
during
pregnancy
(n = 150)
Control
group 1
No history
of CHIKV
infection
(n = 135)
Control group 2
History of
CHIKV
infection
outside of
pregnancy
(n = 131)
Age (year) (mean ± SD) 30.9 ± 6.0 30.2 ± 6.0 30.9 ± 6.3
Race/ethnicity
  African descent 126 (84) 115 (85) 114 (87)
  Asian descent 7 (5) 4 (3) 6 (5)
  Other 16 (11) 8 (6) 10 (8)
  Refused/Don’t know 1 (1) 8 (6) 1 (1)
Education
  Primary school 15 (10) 16 (13) 14 (11)
  Secondary school 89 (60) 64 (47) 66 (50)
  Bachelor’s degree 17 (11) 8 (6) 11 (8)
  Graduate/Professional degree 4 (3) 8 (6) 2 (2)
  Other 24 (16) 31 (23) 38 (29)
  Refused/Don’t know 1 (1) 8 (6) 0 (0)
Occupation
  Student 6 (4) 1 (1) 3 (2)
  Housewife 8 (5) 3 (2) 4 (3)
  Business/office worker 48 (32) 36 (28) 43 (33)
  Manual worker 6 (4) 11 (9) 12 (9)
  Unemployed 28 (19) 39 (31) 29 (22)
  Other 54 (36) 38 (30) 40 (32)
Married/common-law/lives with partner 79 (53) 79 (63) 74 (58)
Previously divorced or separated 1 (5) 8 (6) 10 (8)
Mosquito precautions
  Use of repellent/spray 126 (85) 99 (77) 114 (87)
  Use of mosquito coil/net 95 (64) 74 (58) 90 (69)
  Collect water on roof 46 (31) 38 (29) 38 (330)
  Store water in black tanks 71 (47) 65 (51) 65 (50)
Prior pregnancies
  Nulliparous 39 (26) 31 (23) 26 (20)
  Multiparous 110 (73) 93 (69) 105 (80)
  Missing 1 (1) 11 (8) 0 (0)

Values are frequency (%) or frequency ± standard deviation (SD).