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. 2021 Jan 26;17(7):2176–2184. doi: 10.1080/21645515.2020.1851536

Table 2.

Characteristics of participants by site (n = 4,648)

  Overall
Nagpur
Lima
Bangkok
 
  Total
n (%)
All
n (%)
All
n (%)
All
n (%)
p-Value
All 4,648 1,967 (42) 1,548 (33) 1,133 (24)  
Age-group (years)          
18–34 4,127 (89) 1,925 (98) 1,297 (84) 905 (80) <0.01
≥35 521 (11) 42 (2) 251 (16) 228 (20)  
Education          
None 79 (2) 37 (2) 4 (0.3) 38 (3) <0.01
Primary 927 (20) 343 (18) 121 (8) 463 (41)  
Secondary 2,349 (51) 1,174 (60) 899 (58) 276 (24)  
Post-secondary/University 1,278 (27) 406 (21) 522 (34) 350 (31)  
Marital status          
Married/living together 4,355 (94) 1,962 (100) 1,283 (83) 1,110 (98) <0.01
Single/Widowed/Divorced/Separated 287 (6) 3 (0) 262 (17) 22 (2)  
Occupation          
Does not work outside home 3,297 (71) 1,888 (97) 1,085 (70) 324 (29) <0.01
Works outside home 1,338 (29) 68 (3) 462 (30) 808 (71)  
Has health insurance 2,360 (51) 167 (9) 1,136 (74) 1,057 (94) <0.01
Monthly per capita incomea          
Below poverty line 1,222 (46) - 909 (59) 313 (28) <0.01
Above poverty line 1,459 (54) - 639 (41) 820 (72)  
Number of people living in the household, excluding the mother          
0–2 2,254 (48) 718 (37) 759 (49) 777 (69) <0.01
3–4 1,349 (29) 625 (32) 505 (33) 219 (19)  
5+ 1,033 (22) 621 (32) 278 (18) 134 (12)  
Number of ANC visits during pregnancy          
0–4 1,144 (25) 679 (36) 429 (29) 36 (3) <0.01
5–7 1,655 (36) 1,019 (54) 475 (32) 161 (15)  
8+ 1,671 (36) 196 (10) 578 (39) 897 (82)  
Number of children          
0 2,220 (48) 969 (49) 765 (50) 486 (43) <0.01
1 1,711 (37) 807 (41) 477 (31) 427 (38)  
2+ 704 (15) 183 (9) 301 (20) 220 (19)  
Gestational diabetes 162 (3) 3 (0) 40 (3) 119 (11) <0.01
Gestational hypertension 318 (7) 162 (8) 86 (6) 70 (6) <0.01
Any chronic conditionb 175 (4) 88 (4) 33 (2) 54 (5) <0.01
Received influenza vaccination in current season (verified) 785 (17) 10 (1) 770 (50) 5 (0) <0.01
Received influenza vaccination in current season (self-report/verified) 945 (20) 14 (1) 900 (58) 31 (3) <0.01
Ever previously vaccinated against influenza 636/2330 (27) 0/70 (0) 439/1,305 (34) 197/955 (21) <0.01
Received influenza vaccination in a previous pregnancyc 229/1433 (16) 0/40 (0) 203/785 (23) 26/608 (4) <0.01
Receipt of influenza vaccination recommendation by healthcare provider 1,096 (24) 13 (1) 894 (60) 189 (17) <0.01
Self-perceived health score          
Median (interquartile range: 0.25, 0.75) 90 (80,99) 99 (90,100) 70 (50,80) 90 (80,100) <0.01*
Heard of influenza prior to enrollment 2651 (57) 167 (8) 1,399 (90) 1,085 (96) <0.01

aIncome: (India: data not available; Thailand: Monthly income per capita ≥3,165 TBH; Peru: Monthly income per capita ≥338 soles). bDerived variable. cAmong those with a previous pregnancy and with self-response for vaccination (yes/no) (n = 1,433). * Kruskal–Wallis test (All other tested by Chi-square test).

Missing data: Education (n = 15), Marital status (n = 2), Occupation (n = 13), Have health insurance (n = 21), Monthly family income (n = 6), Number of people living in the household (n = 12), Number of ANC visits during pregnancy (n = 178), Number of children (n = 13), Proxy for vaccination (n = 9), Previously vaccinated (n = 2,318), Received vaccination in previous pregnancy (n = 1,442 of those who had a previous pregnancy: 2,874), Receipt of vaccination recommendation by a healthcare provider (n = 92), Self-perceived health score (n = 24), Heard of influenza prior to enrollment (n = 1).