Table 2 Performance in survey (number (and fraction) of correct answers) by type of spirometer used, number of spirometries requested during a regular week, and number of patients served by the GP
From: Spirometry in chronic obstructive pulmonary disease in Norwegian general practice
Requested reversibility test | Recognized non-sign. Reversibility test | Suggested COPD as likely diagnosis | Identified parameter FEV1/FVC ratio | Identified parameter FEV11 in % of predicted | |
|---|---|---|---|---|---|
Type of spirometer used | |||||
Welch-Allyn (n = 311) | 231 (0.75) | 288 (0.93) | 252 (0.81) | 167 (0.54) | 124 (0.40) |
Spirare (n = 169) | 129 (0.76) | 159 (0.94) | 143 (0.85) | 69 (0.41) | 80 (0.47) |
Other/Don’t know (n = 150) | 107 (0.72) | 135 (0.90) | 117 (0.78) | 51 (0.34) | 65 (0.43) |
p-value for difference, all groups | 0.65 | 0.38 | 0.32 | < 0.001 | 0.28 |
p-value for difference, excluding “Other/Don’t know” | 0.70 | 0.54 | 0.33 | 0.01 | 0.11 |
Number of spirometries requested per week | |||||
None (n = 70) | 53 (0.76) | 64 (0.91) | 48 (0.69) | 32 (0.46) | 29 (0.41) |
1–4 (n = 403) | 308 (0.77) | 383 (0.95) | 358 (0.89) | 193 (0.48) | 203 (0.50) |
5 or more (n = 30) | 27 (0.90) | 29 (0.97) | 29 (0.97) | 19 (0.63) | 15 (0.50) |
Missing (n = 127) | 79 (0.63) | 106 (0.84) | 77 (0.61) | 43 (0.34) | 22 (0.17) |
p-value for difference, all groups | < 0.01 | < 0.001 | < 0.001 | 0.01 | < 0.001 |
p-value for trend, excluding “Missing” | 0.23 | 0.20 | < 0.001 | 0.20 | 0.25 |
Number of patients served by GP | |||||
< 1000 (n = 181) | 142 (0.79) | 167 (0.92) | 148 (0.82) | 88 (0.49) | 93 (0.51) |
1000–1499 (n = 294) | 221 (0.75) | 284 (0.97) | 259 (0.89) | 142 (0.48) | 147 (0.50) |
≥ 1500 (n = 33) | 27 (0.82) | 33 (1.00) | 31 (0.94) | 17 (0.52) | 11 (0.33) |
Missing (n = 122) | 77 (0.64) | 98 (0.80) | 74 (0.61) | 40 (0.33) | 18 (0.15) |
p-value for difference, all groups | 0.02 | < 0.001 | < 0.001 | 0.02 | < 0.001 |
p-value for trend, excluding “Missing” | 0.88 | 0.75 | 0.02 | 0.67 | 0.12 |