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. Author manuscript; available in PMC: 2020 May 1.
Published in final edited form as: Qual Life Res. 2018 Jul 23;27(11):3021–3035. doi: 10.1007/s11136-018-1941-1

Table 2.

Demographic characteristics of participants

N = 1871 Unweighted number of participants (%) Weighted row % (standard error)
Non-opioid user (N = 1181) Opioid user (N= 690) Non-opioid user Opioid user
Race
 White 894 (75.7) 493 (71.5) 64.8 (1.64) 35.2 (1.64)
 Black 192 (16.3) 155 (22.5) 56.9 (2.85) 43.1 (2.85)
 Other 95 (8.0) 42 (6.0) 66.3 (4.89) 33.7 (4.89)
Age
 18–34 107 (9.1) 65 (9.4) 67.8 (4.25) 32.2 (4.25)
 35–49 211 (17.9) 177 (25.7) 53.3 (3.04) 46.7 (3.04)
 50–65 466 (39.5) 301 (43.6) 60.6 (2.22) 39.5 (2.22)
 66–85 397 (33.6) 147 (21.3) 74.5 (2.48) 25.6 (2.48)
Gender
 Male 423 (35.8) 237 (34.4) 62.5 (2.32) 37.5 (2.32)
 Female 758 (64.2) 453 (65.7) 65.3 (1.74) 34.7 (1.74)
Marital status
 Married 640 (54.2) 353(51.2) 63.1 (2.03) 36.9 (2.03)
 Not married 366 (31.0) 238 (34.5) 65.9 (2.63) 34.1 (2.63)
 Never married 175 (14.8) 99 (14.4) 65.5 (4.16) 34.5 (4.16)
Education level
 High school or less 555 (47.0) 345 (50.0) 61.0 (2.00) 39.0 (2.00)
 More than high school 620 (52.5) 338 (49.0) 66.6 (1.91) 33.4 (1.91)
 Missing 6 (0.5) 7 (1.0) 32.3 (13.45) 67.7 (13.45)
Health insurance
 Public 377 (31.9) 244 (35.4) 63.5 (2.55) 36.5 (2.55)
 Private 692 (58.6) 368 (53.3) 65.3 (1.91) 34.7 (1.91)
 Uninsured 112 (9.5) 78 (11.3) 57.1 (4.43) 42.9 (4.43)
Region
 Northeast 212(18.0) 105 (15.2) 68.1 (2.75) 31.9 (2.75)
 Midwest 303 (25.7) 157 (22.8) 68.5 (2.91) 31.5 (2.91)
 South 376 (31.8) 272 (39.4) 59.6 (2.72) 40.4 (2.72)
 West 290 (24.6) 156 (22.6) 62.9 (3.01) 37.1 (3.01)
Income level
 Poor/near poor 246 (20.8) 217 (31.5) 55.4 (2.81) 44.6 (2.81)
 Low income 198 (16.8) 111 (16.1) 64.6 (3.24) 35.4 (3.24)
 Middle income 339 (28.7) 179 (25.9) 65.0 (2.69) 35.0 (2.69)
 High income 398 (33.7) 183 (26.5) 67.4 (2.34) 32.6 (2.34)
Charlson Comorbidity Index
 0 669 (56.7) 397 (57.5) 64.6 (1.94) 35.4 (1.94)
 1 214 (18.1) 111 (16.1) 66.7 (3.41) 33.3 (3.41)
 ≥2 298 (25.2) 182 (26.4) 61.3 (3.20) 38.7 (3.20)
Chronic back pain 498 (42.2) 396 (57.4) 57.9 (2.08) 42.1 (2.08)
Chronic osteoarthritis 509 (43.1) 254 (36.8) 65.8 (2.25) 34.2 (2.25)
Chronic rheumatoid arthritis 244 (20.7) 129(18.7) 68.0 (3.37) 32.0 (3.37)
Anti-depressant medication use 259 (21.9) 224 (32.5) 59.2 (2.80) 40.8 (2.80)
Anti-anxiety medication use 134 (11.4) 122 (17.7) 52.0 (3.90) 48.0 (3.90)
COX-2 inhibitor medication use 59 (5.0) 41 (5.9) 56.2(5.91) 43.9(5.91)
Skeletal muscle relaxant medication use 130 (11.0) 196 (28.4) 40.9 (3.38) 59.1 (3.38)
NSAID medication use 357 (30.2) 269 (39.0) 57.2 (2.42) 42.8 (2.42)
Mental health (MH) subdomain, R2a
 <50 161 (13.6) 172 (24.9) 47.4 (3.53) 52.6 (3.53)
 50 to < 62.5 201 (17.0) 118 (17.1) 65.9 (3.47) 34.1 (3.47)
 62.5 to < 87.5 453 (38.4) 266 (38.6) 63.7 (2.29) 36.3 (2.29)
 ≥87.5 366 (31.0) 134 (19.4) 72.6 (2.46) 27.4 (2.46)
RE subdomain, R2a
 <50 128 (10.8) 142 (20.6) 46.6 (4.09) 53.5 (4.09)
 50 to < 75 242 (20.5) 150 (21.7) 64.3 (3.60) 35.7 (3.60)
 75 to < 100 314 (26.6) 180 (26.1) 64.3 (2.85) 35.7 (2.85)
 100 497 (42.1) 218 (31.6) 68.4 (2.10) 31.6 (2.10)
SF subdomain, R2a
 <50 154 (13.0) 168 (24.4) 47.7 (3.80) 52.3 (3.80)
 50 to < 75 230 (19.5) 176 (25.5) 56.7 (3.17) 43.3 (3.17)
 75 to < 100 232 (19.6) 136 (19.7) 61.1 (3.25) 38.9 (3.25)
 100 565 (47.8) 210 (30.4) 73.9 (1.96) 26.1 (1.96)
Vitality (VT) subdomain, R2a
 <25 91 (7.7) 87 (12.6) 48.2 (4.31) 51.8 (4.31)
 25 to < 50 209 (17.7) 185 (26.8) 53.8 (2.93) 46.2 (2.93)
 50 to < 75 461 (39.0) 238 (34.5) 67.0 (2.20) 33.0 (2.20)
 ≥75 420 (35.6) 180 (26.1) 71.3(2.35) 28.7 (2.35)
General health perceptions (GH) subdomain, R2a
 <25 68 (5.8) 79(11.5) 48.1 (5.66) 51.9 (5.66)
 25 to < 50 246 (20.8) 233 (33.8) 48.2 (3.09) 51.8(3.09)
 50 to < 75 484(41.0) 233 (33.8) 67.2(2.13) 32.8(2.13)
 ≥75 383 (32.4) 145(21.0) 73.7 (2.29) 26.3 (2.29)
Bodily pain (BP) subdomain, R2a
 <25 79 (6.7) 133 (19.3) 38.1 (4.80) 61.9 (4.80)
 25 to < 50 223 (18.9) 231 (33.5) 48.4 (3.02) 51.7 (3.02)
 50 to < 75 267 (22.6) 135 (19.6) 64.6 (2.93) 35.4 (2.93)
 ≥75 612(51.8) 191 (27.7) 76.2 (1.88) 23.8 (1.88)
Role physical (RP) subdomain, R2a
 <25 118(10.0) 153 (22.2) 41.3(3.93) 58.7 (3.93)
 25 to < 50 177(14.8) 152(25.1) 52.3 (3.39) 47.7 (3.39)
 50 to < 75 526 (44.5) 260 (37.7) 68.0(2.16) 32.0(2.16)
 ≥75 360 (30.5) 125(18.1) 75.2(2.31) 24.8(2.31)
Physical functioning (PF) subdomain, R2a
 <25 182 (15.4) 192 (27.8) 48.9 (2.88) 51.1 (2.88)
 25 to < 50 117 (9.9) 111 (16.1) 47.7 (4.50) 52.3 (4.50)
 50 to < 100 484 (41.0) 251 (36.4) 67.3 (2.25) 32.7 (2.25)
 100 398 (33.7) 136 (19.7) 75.0 (2.38) 25.0 (2.38)
Health-related quality of life, R2a
 MCS12
  0 to<30 69 (5.8) 79 (11.5) 47.9 (4.80) 52.1 (4.80)
  30 to < 40 165 (14.0) 116 (16.8) 57.7 (4.28) 42.3 (4.28)
  40 to < 45 123 (10.4) 75 (10.9) 65.0 (4.09) 35.0 (4.09)
  45 to < 50 170 (14.4) 93 (13.5) 64.9 (3.65) 35.2 (3.65)
  50 to < 55 208 (17.6) 119 (17.3) 65.7 (3.01) 34.3 (3.01)
  55 to < 60 258 (21.9) 127 (18.4) 67.7 (2.86) 32.3 (2.86)
  ≥60 188 (15.9) 81 (11.7) 67.4 (3.58) 32.6 (3.58)
 PCS 12
  0 to<25 130 (11.0) 173 (25.1) 39.8 (3.21) 60.3 (3.21)
  25 to < 35 212 (18.0) 180 (26.1) 56.4 (2.69) 43.6 (2.69)
  35 to < 40 165 (14.0) 103 (14.9) 61.4(3.74) 38.6 (3.74)
  40 to < 45 173 (14.7) 71 (10.3) 72.4 (3.53) 27.6 (3.53)
  45 to < 50 155 (13.1) 54 (7.8) 72.1 (4.16) 27.9(4.16)
  50 to < 55 200 (16.9) 65 (9.4) 75.1 (3.08) 24.9 (3.08)
  ≥55 146 (12.4) 44 (6.4) 78.7 (3.36) 21.3 (3.36)

NSAID non-steroidal anti-inflammatory drugs

a

R2 = derived from round 2 of the MEPS survey