Table 1 Demographic and patient variables
| Â | Pain reported at index visit | Overall | |
|---|---|---|---|
No | Yes | ||
No. with data | 22,288 | 3892 | 26,180 |
BMI Class, No. (%) | |||
 Normal BMI | 12,793 (57.4) | 2037 (52.3) | 14,830 (56.6) |
 Underweight | 888 (4.0) | 148 (3.8) | 1036 (4.0) |
 Overweight | 3636 (16.3) | 653 (16.8) | 4289 (16.4) |
 Obese | 3233 (14.5) | 659 (16.9) | 3892 (14.9) |
 Severely Obese | 1738 (7.8) | 395 (10.1) | 2133 (8.1) |
Age, No. (%) | |||
 2–5 years old | 7311 (32.8) | 1006 (25.8) | 8317 (31.8) |
 6–11 years old | 8845 (39.7) | 1672 (43.0) | 10,517 (40.2) |
 12–19 years old | 6132 (27.5) | 1214 (31.2) | 7346 (28.1) |
Sex = Female, No. (%) | 10,808 (48.5) | 2064 (53.0) | 12,872 (49.2) |
Race/ethnicity, No. (%) | |||
 Black | 11,711 (52.5) | 1878 (48.3) | 13,589 (51.9) |
 Hispanic | 6202 (27.8) | 1125 (28.9) | 7327 (28.0) |
 White | 2145 (9.6) | 427 (11.0) | 2572 (9.8) |
 Other/Unknown | 2230 (10.0) | 462 (11.9) | 2692 (10.3) |
Insurance type, No. (%) | |||
 Public | 19,903 (89.3) | 3461 (88.9) | 23,364 (89.2) |
 Commercial | 1355 (6.1) | 237 (6.1) | 1592 (6.1) |
 Other | 1030 (4.6) | 194 (5.0) | 1224 (4.7) |
Clinic site, No. (%) | |||
 Clinic 1 | 6126 (27.5) | 923 (23.7) | 7049 (26.9) |
 Clinic 2 | 2335 (10.5) | 373 (9.6) | 2708 (10.3) |
 Clinic 3 | 5077 (22.8) | 954 (24.5) | 6031 (23.0) |
 Clinic 4 | 3868 (17.4) | 698 (17.9) | 4566 (17.4) |
 Clinic 5 | 4882 (21.9) | 944 (24.3) | 5826 (22.3) |
Used tablet interface, No. (%) | 14,116 (63.3) | 2915 (74.9) | 17,031 (65.1) |
Season, No. (%) | |||
 Autumn | 6644 (29.8) | 1158 (29.8) | 7802 (29.8) |
 Winter | 5299 (23.8) | 1131 (29.1) | 6430 (24.6) |
 Spring | 3788 (17.0) | 736 (18.9) | 4524 (17.3) |
 Summer | 6557 (29.4) | 867 (22.3) | 7424 (28.4) |
Pain indicated in preceding visit, No. (%) | |||
 No | 11,631 (52.2) | 1784 (45.8) | 13,415 (51.2) |
 Yes | 1764 (7.9) | 775 (19.9) | 2539 (9.7) |
 Unknown (no response) | 8893 (39.9) | 1333 (34.2) | 10,226 (39.1) |