| Genotype |  | |
---|---|---|---|
 | Val/ Val N (%) | Val/Met N (%) | P-value |
Gender | |||
 Female | 45 (55.6) | 16 (61.5) | 0.59 |
 Male | 36 (44.4) | 10 (38.6) |  |
Civil status | |||
 Living alone | 42 (51.8) | 11 (42.3) | 0.40 |
 Living with partner | 39 (48.2) | 15 (57.7) |  |
Ethnicity | |||
 White | 14 (18.2) | 8 (34.8) |  |
 Brown | 46 (59.7) | 13 (56.5) | 0.14 |
 Black | 17 (22.1) | 2 (8.7) |  |
Schooling | |||
 Until high school | 63 (77.8) | 16 (64.0) | 0.17 |
 Complete high school | 18 (22.2) | 9 (36.0) |  |
Have children | |||
 No | 19 (23.5) | 6 (23.1) | 0.97 |
 Yes | 62 (76.5) | 20 (76.9) |  |
Healthy | |||
 Good, very good, or great | 35 (44.3) | 12 (46.1) | 0.87 |
 Regular, bad, or lousy | 44 (55.7) | 14 (53.9) |  |
Chronicity pain | |||
 3–12 months | 21 (25.9) | 5 (19.2) |  |
 13–60 months | 27 (33.3) | 13 (50.0) | 0.31 |
  > 60 months | 33 (40.8) | 8 (30.8) |  |
Pain intensity | |||
 Least | 8 (9.9) | 4 (15.4) |  |
 Moderate | 14 (17.3) | 3 (11.5) | 0.62 |
 Intense | 59 (72.8) | 19 (73.1) |  |
Pain duration in the month | |||
 Intermittent | 37 (46.2) | 15 (65.2) | 0.11 |
 Constant | 43 (53.8) | 8 (34.8) |  |
Comorbidities | |||
 No | 46 (56.8) | 16 (61.5) | 0.67 |
 Yes | 35 (43.2) | 10 (38.5) |  |
Physical activity | |||
 Inactive | 55 (67.9) | 18 (69.2) |  |
 Insufficiently active | 8 (9.9) | 4 (15.4) | 0.80 |
 Moderately active | 13 (16.0) | 3 (11.5) |  |
 Vigorously active | 5 (6.2) | 1 (3.9) |  |
Smoking | |||
 No | 68 (91.9) | 21 (91.3) | 0.93 |
 Yes | 6 (8.1) | 2 (8.7) |  |
Alcoholism | |||
 No | 66 (89.2) | 22 (95.7) | 0.35 |
 Yes | 8 (10.8) | 1 (4.3) |  |
Satisfaction | |||
 Unsatisfied or a little satisfied | 33 (51.6) | 9 (40.9) | 0.39 |
 Satisfied or much satisfied | 31 (48.4) | 13 (59.1) |  |
Occupational situation | |||
 Active/employed | 62 (76.5) | 18 (69.2) | 0.45 |
 Unemployed | 19 (23.5) | 8 (30.8) |  |
Low back pain in family history | |||
 No | 36 (44.4) | 12 (46.2) | 0.88 |
 Yes | 45 (55.6) | 14 (53.8) |  |
Overweight/obesity | |||
 No | 32 (41.0) | 11 (42.3) | 0.91 |
 Yes | 46 (59.0) | 15 (57.7) |  |
CSI | |||
 No | 14 (17.3) | 4 (15.4) | 0.82 |
 Yes | 67 (82.7) | 22 (84.6) |  |
RMDQ | |||
 No | 28 (34.6) | 9 (34.6) | 0.97 |
 Yes | 53 (65.4) | 17 (65.4) |  |
Medication | |||
 Non opioid | 33 (62.3) | 12 (80.0) | 0.20 |
 Weak opioid | 20 (37.7) | 3 (20.0) |  |
Medication frequency | |||
 Every 6 h | 35 (66.0) | 7 (50.0) | 0.27 |
 If there is pain | 18 (34.0) | 7 (50.0) |  |
Start of medication | |||
 12 months ago | 32 (68.1) | 8 (80.0) |  |
 13–60 months | 7 (14.9) | 1 (10.0) | 0.75 |
 More than 60 months | 8 (17.0) | 1 (10.0) |  |
Relief of pain with medication | |||
 50% relief | 32 (62.8) | 5 (45.5) | 0.29 |
 More than 50% relief | 19 (37.2) | 6 (54.5) |  |
Tampa score | |||
 Light | 7 (8.6) | 2 (7.7) |  |
 Moderate | 47 (58.1) | 14 (53.8) | 0.89 |
 Critical | 27 (33.3) | 10 (38.5) |  |
HADS-anxiety | |||
 No | 34 (42.0) | 11 (42.3) | 0.98 |
 Yes | 47 (58.0) | 15 (57.7) |  |
HADS-depression | |||
 No | 53 (65.4) | 20 (76.9) | 0.27 |
 Yes | 28 (34.6) | 6 (23.1) |  |