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. Author manuscript; available in PMC: 2023 Feb 22.
Published in final edited form as: N Engl J Med. 2022 Aug 18;387(7):599–610. doi: 10.1056/NEJMoa2201662

Table 1.

Characteristics of the Patients at Baseline (Modified Intention-to-Treat Population).*

Characteristic Metformin Ivermectin Fluvoxamine
Active (N = 663) Control (N = 660) Active (N = 410) Control (N = 398) Active (N = 334) Control (N = 327)
Demographic
Median age (IQR) —yr 46 (38–55) 45 (37–55) 46 (39–55) 45 (37–56) 46 (38–53) 43 (37–53)
Female sex — no. (%) 359 (54.1) 382 (57.9) 216 (52.7) 226 (56.8) 170 (50.9) 188 (57.5)
Race or ethnic group
 Native American 10 (1.5) 17(2.6) 7 (1.7) 9 (2.3) 8 (2.4) 9 (2.8)
 Asian 25 (3.8) 26 (3.9) 19 (4.6) 18 (4.5) 9 (2.7) 12 (3.7)
 Hawaiian or Pacific Islander 5 (0.8) 4 (0.6) 2 (0.5) 3 (0.8) 2 (0.6) 3 (0.9)
 Black 55 (8.3) 45 (6.8) 30 (7.3) 29 (7.3) 28 (8.4) 23 (7.0)
 White 545 (82.2) 546 (82.7) 340 (82.9) 322 (80.9) 272 (81.4) 267 (81.7)
 Other 43 (6.5) 37 (5.6) 24 (5.9) 29 (7.3) 21 (6.3) 23 (7.0)
 Latinx 76 (11.5) 84 (12.7) 41 (10.0) 57(14.3) 42 (12.6) 46 (14.1)
Medical history
Body-mass index
 Median (IQR) 30 (27–34) 30 (27–34) 30 (27–34) 30 (27–34) 29 (27–34) 30 (27–34)
 ≥30 — no. (%) 316 (47.7) 330 (50.0) 194 (47.3) 189 (47.5) 155 (46.4) 157 (48.0)
Cardiovascular disease§ 178 (26.8) 175 (26.5) 94 (22.9) 90 (22.6) 104 (31.1) 74 (22.6)
Diabetes 10(1.5) 16 (2.4) 8 (2.0) 5 (1.3) 4 (1.2) 3 (0.9)
Primary series of vaccines 359 (54.1) 331 (50.2) 222 (54.1) 227 (57.0) 186 (55.7) 187 (57.2)
Symptom duration
 No. of days 4.8±1.9 4.8±1.9 4.6±l.9 4.8±1.8 5.0±2.2 4.7±1.8
 ≤4 days — no./total no. (%) 298/653 (45.6) 305/642 (47.5) 199/406 (49.0) 174/391 (44.5) 147/330 (44.5) 146/322 (45.3)
Predominant variant — no. (%)
 Alpha before 6/19/21 79 (11.9) 80(12.1) 11 (2.7) 11 (2.8) 12 (3.6) 11 (3.4)
 Delta from 6/19/21 to 12/12/21 440 (66.4) 431 (65.3) 278 (67.8) 275 (69.1) 278 (83.2) 275 (84.1)
 Omicron after 12/12/21 144 (21.7) 149 (22.6) 121 (29.5) 112 (28.1) 46 (14.0) 41 (12.5)
Insurance status — no. (%)
 Medicaid 92 (13.9) 108 (16.4) 70 (17.1) 60 (15.1) 43 (12.9) 42 (12.8)
 Medicare 52 (7.8) 48 (7.3) 27 (6.6) 31 (7.8) 27 (8.1) 21 (6.4)
 Private 410 (61.8) 413 (62.6) 257 (62.7) 230 (57.8) 206 (61.7) 197 (60.2)
 None 97 (14.6) 81 (12.3) 52 (12.7) 67 (16.8) 55 (16.5) 58 (17.7)
*

Plus-minus values are means ±SD. IQR denotes interquartile range.

A total of 6% of the women were pregnant during the trial.

Race or ethnic group was reported by the patients. The category of “other” included patients for whom data were not provided.

§

Cardiovascular disease defined as hypertension, hyperlipidemia, coronary artery disease, past myocardial infarction, heart failure, pacemaker placement, arrhythmias or pulmonary hypertension.

Enrollment in the fluvoxamine group was stopped on January 7, 2022, by the data and safety monitoring board for a lack of conditional power.