Table 1 Descriptive statistics for participants stratified by non-IERP/IERP Groups
|  | Total sample N = 4807 | Non-IERP group N = 3264 | IERP group N = 1543 | χ2 | P |
|---|---|---|---|---|---|
N (%) | N (%) | N (%) | |||
Residence | 4.750 | 0.030 | |||
 Rural | 2479 (51.57) | 1648 (50.49) | 831 (53.86) |  |  |
 Urban | 2328 (48.43) | 1616 (49.51) | 712 (46.14) |  |  |
Education level | 6.100 | 0.047 | |||
 Middle school or below | 1789 (37.22) | 1185 (36.31) | 604 (39.14) |  |  |
 High school | 1481 (30.81) | 1000 (30.64) | 481 (31.17) |  |  |
 College or above | 1537 (31.97) | 1079 (33.05) | 458 (29.69) |  |  |
Household income per month | 5.160 | 0.271 | |||
  < 3000 RMB | 1872 (38.94) | 1238 (37.93) | 634 (41.09) |  |  |
 3001–5000 RMB | 1577 (32.81) | 1079 (33.06) | 498 (32.27) |  |  |
 5001–10,000 RMB | 967 (20.12) | 673 (20.62) | 294 (19.05) |  |  |
 10,001–20,000 RMB | 282 (5.87) | 196 (6.00) | 86 (5.57) |  |  |
  > 20,000 RMB | 109 (2.27) | 78 (2.39) | 31 (2.01) |  |  |
Intentions to use antibiotics | |||||
Sore throat | 23.92 | < 0.001 | |||
 No | 2770 (57.62) | 1835 (56.22) | 935 (60.60) |  |  |
 Don’t know | 831 (17.29) | 624 (19.12) | 207 (13.42) |  |  |
 Yes | 1206 (25.09) | 805 (24.66) | 401 (25.99) |  |  |
Cold | 21.75 | < 0.001 | |||
 No | 2805 (58.35) | 1891 (57.94) | 914 (59.24) |  |  |
 Don’t know | 759 (15.79) | 567 (17.37) | 192 (12.44) |  |  |
 Yes | 1243 (25.86) | 806 (24.69) | 437 (28.32) |  |  |
Diarrhea | 12.41 | 0.002 | |||
 No | 3026 (62.95) | 2040 (62.50) | 986 (63.90) |  |  |
 Don’t know | 1014 (21.09) | 730 (22.37) | 284 (18.41) |  |  |
 Yes | 767 (15.96) | 494 (15.13) | 273 (17.69) |  |  |
Fever | 11.10 | 0.004 | |||
 No | 2041 (42.46) | 1364 (41.79) | 677 (43.88) |  |  |
 Don’t know | 894 (15.60) | 649 (19.88) | 245 (15.88) |  |  |
 Yes | 1872 (38.94) | 1251 (38.33) | 621 (40.25) |  |  |