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Table 2 Baseline characteristics of Participants by receiving one shot of covid vaccination, N = 275, data collected October 5th, 2021 to September 13th, 2022

From: COVID-19 vaccination and HIV transmission among persons who inject drugs during the first two years of the COVID-19 pandemic in New York City

Variable

 

Received

COVID-19 vaccination

 

Overall,

N = 275

Not vaccinated,

N = 53

Vaccinated, N = 222

p-value

Demographics

Gender (%)

   

0.39

Male

194 (71%)

34 (64%)

160 (72%)

 

Female

80 (29%)

19 (36%)

61 (27%)

 

Transgender

1 (0%)

0 (0%)

1 (0%)

 

Mean age (SD)

49(11)

48(12)

49(10)

0.60

Race or ethnicity (%)

   

0.28

Non-Hispanic White

83 (30%)

13 (25%)

70 (32%)

 

Non-Hispanic Black

97 (35%)

22 (42%)

75 (34%)

 

Hispanic

71 (26%)

11 (21%)

60 (27%)

 

Mixed/Other race

23 (8%)

7 (13%)

16 (7%)

 

Education (Have High school diploma or GED, %)

   

0.95

No

84 (31%)

16 (30%)

68 (31%)

 

Yes

191 (69%)

37 (70%)

154 (69%)

 

Main source of income in last 6 months (%)

   

0.69

Regular employment

24 (9%)

5 (9%)

19 (9%)

 

Government benefits

194 (71%)

35 (66%)

159 (72%)

 

Irregular employment or friend/relative’s income

31 (11%)

6 (11%)

25 (11%)

 

Possibly illegal

26 (9%)

7 (13%)

19 (9%)

 

Housing status in last 6 months (%)

   

0.71

Stably housed

101 (37%)

20 (38%)

81 (36%)

 

Housed with friends/relatives

58 (21%)

13 (25%)

45 (20%)

 

Unstable/homeless

116 (42%)

20 (38%)

96 (43%)

 

Experienced food insecurity in last 6 months (%)

   

0.29

No

97 (35%)

22 (42%)

75 (34%)

 

Yes

178 (65%)

31 (58%)

147 (66%)

 

Have a smartphone

   

0.90

No

43 (16%)

8 (15%)

35 (16%)

 

Yes

232 (84%)

45 (85%)

187 (84%)

 

COVID-19 vaccination and comorbidity

 Fully vaccinated (%)

No

65 (24%)

53 (100%)

12 (5%)

 

Yes

210 (76%)

0 (0%)

210 (95%)

 

COVID-19 antibody test1 (%)

   

 < 0.001

Negative

36 (13%)

19 (36%)

17 (8%)

 

Positive

238 (87%)

34 (64%)

204 (92%)

 

Mean vaccination attitude score (SD)

25(6)

31(5)

24(6)

 < 0.001

Number of pre-existing conditions2

   

0.85

None

154 (56%)

28 (53%)

126 (57%)

 

1

90 (33%)

19 (36%)

71 (32%)

 

2–4

31 (11%)

6 (11%)

25 (11%)

 

Drug use history

Main drug (%)

   

0.96

Heroin

222 (81%)

44 (83%)

178 (80%)

 

Cocaine

31 (11%)

5 (9%)

26 (12%)

 

Other drugs

22 (8%)

4 (8%)

18 (8%)

 

Frequency of use for main drugs in last 6 months (%)

   

0.26

Once a week or less

15 (5%)

1 (2%)

14 (6%)

 

Several times per week

82 (30%)

13 (25%)

69 (31%)

 

Daily or more frequently

177 (65%)

39 (74%)

138 (62%)

 

Receiving methadone maintenance treatment (%)

   

0.90

Never

55 (20%)

12 (23%)

43 (19%)

 

Previous

72 (26%)

13 (25%)

59 (27%)

 

Current

148 (54%)

28 (53%)

120 (54%)

 

Used methadone in last 30 days

   

0.08

No

238 (87%)

42 (79%)

196 (88%)

 

Yes

37 (13%)

11 (21%)

26 (12%)

 

Mental health

Kessler Psychological distress (%)

   

0.70

Moderate/Minor

170 (62%)

34 (64%)

136 (61%)

 

Serious

105 (38%)

19 (36%)

86 (39%)

 

Substance use disorder (%)

   

0.77

Mild/Moderate

19 (7%)

4 (8%)

15 (7%)

 

Severe

256 (93%)

49 (92%)

207 (93%)

 
  1. Pearson's Chi-squared test and Fisher's exact test for comparing proportions, Wilcoxon rank-sum test for comparing means. SD: Standard deviation. IQR: Interquartile range
  2. 1There was one subject whose blood specimen had insufficient quantity due to collapsed vein and no determinate test result of COVID-19 antibody were provided
  3. 2The chronic conditions surveyed included diabetes, overweight, heart diseases, and lung disease/breathing disease