No of health items within each spending category | No of households | Total no of health questions | Mean ratio | 95% limits of agreement of mean ratio | Estimated difference in mean ratio between questionnaire versions and CI and p value | Estimated diffference in SD of mean ratio between questionnaire versions and CI and p value |
Outpatient care | p=0.49 | p=0.50 | ||||
2 health items | 44 | 11 | 1.02 | 0.05 to 21.2 | – | – |
12 health items | 126 | 44 | 1.21 | 0.05 to 26.7 | 1.29 (0.74 to 2.23) | 1.02 (0.73 to 1.42) |
12 health items | 47 | 56 | 1.56 | 0.12 to 19.6 | 1.47 (0.77 to 2.80) | 0.84 (0.57 to 1.25) |
Inpatient care | p=0.003 | p=0.01 | ||||
2 health items | 91 | 11 | 3.88 | 0.17 to 86.2 | – | – |
14 health items | 99 | 44 | 6.61 | 0.16 to 270.7 | 1.63 (0.99 to 2.69) | 1.35 (1.03 to 1.76) |
14 health items | 100 | 56 | 9.19 | 0.51 to 161.2 | 2.34 (1.44 to 3.83) | 0.93 (0.71–1.21) |
Medicines | p=0.023 | p=0.33 | ||||
2 health items | 302 | 11 | 1.26 | 0.10 to 16.0 | – | – |
9 health items | 381 | 44 | 1.35 | 0.09 to 19.5 | 1.14 (0.91 to 1.42) | 1.04 (0.91 to 1.19) |
16 health items | 354 | 56 | 1.62 | 0.18 to 15.0 | 1.36 (1.01 to 1.70) | 0.95 (0.83 to 1.08) |
Preventive care | p=0.290 | p=0.51 | ||||
2 health items | 86 | 11 | 1.21 | 0.09 to 15.15 | – | – |
5 health items | 67 | 44 | 0.89 | 0.04 to 18.9 | 0.74 (0.46 to 1.14) | 1.19 (0.88 to 1.62) |
5 health items | 22 | 56 | 1.33 | 0.08 to 22.4 | 1.07 (0.55 to 2.05) | 1.04 (0.68 to 1.60) |
Note: The unit of the estimated difference is the mean ratio expressed as a ratio between household and provider for each questionnaire version.
OOP, out-of-pocket.