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Table 4 Crude and adjusted odds ratios (OR) with 95 % confidence intervals (CI) for the association between characteristics of partnership practices and initiating long-term treatment with PPIs

From: General practice variation when initiating long-term prescribing of proton pump inhibitors: a nationwide cohort study

  Crude OR (95 % CI) P-value Adjusted OR* (95 % CI) P-value
Patients per GP
 <1350 1 . 1 .
 1350-1575 1.00 (0.93;1.07) 0.94 0.99 (0.93;1.06) 0.83
 1576-1750 0.95 (0.88;1.03) 0.19 0.98 (0.91;1.06) 0.69
 >1750 0.95 (0.88;1.04) 0.27 0.98 (0.90;1.06) 0.61
Practice location
 Capital area 1 . 1 .
 Provincial city 1.01 (0.94;1.09) 0.75 0.98 (0.90;1.05) 0.53
 Rural area 1.15 (1.06;1.24) <0.001 1.01 (0.94;1.10) 0.74
GP gender
 Male 1 . 1 .
 Predominantly male 0.82 (0.75;0.89) <0.001 0.85 (0.76;0.95) <0.001
 Equally mixed 0.78 (0.71;0.85) <0.001 0.80 (0.73;0.87) <0.001
 Predominantly female 0.77 (0.70;0.85) <0.001 0.83 (0.74;0.94) <0.001
 Female 0.70 (0.62;0.79) <0.001 0.78 (0.69;0.88) <0.001
GP age group
 Under 45 years 1 . 1 .
 45-49 years 1.03 (0.92;1.15) 0.58 1.02 (0.91;1.14) 0.75
 50-54 years 1.08 (0.97;1.21) 0.14 1.04 (0.93;1.15) 0.50
 55-59 years 1.21 (1.08;1.35) <0.001 1.13 (1.01;1.26) 0.03
 60-64 years 1.42 (1.23;1.63) <0.001 1.34 (1.16;1.54) <0.001
 65 years or above 1.54 (1.26;1.87) <0.001 1.35 (1.11;1.64) <0.001
Number of GPs
 2 1 . 1 .
 3 0.96 (0.90;1.03) 0.26 0.95 (0.86;1.06) 0.37
 4 0.96 (0.89;1.04) 0.36 0.99 (0.91;1.09) 0.91
 5 0.98 (0.88;1.09) 0.71 0.96 (0.83;1.10) 0.52
 >5 0.96 (0.85;1.10) 0.58 0.95 (0.82;1.10) 0.48
Training practice
 No 1 . 1 .
 Yes 1.07 (1.01;1.13) 0.03 1.08 (1.02;1.14) <0.001
  1. *Estimates adjusted for practice characteristics and patient characteristics in terms of age, gender, specific gastrointestinal morbidity, socioeconomic status (income, educational level, cohabitation status), comedication with non-steroidal anti-inflammatory drugs (NSAIDs), antiplatelet drugs, anticoagulants, selective serotonine reuptake inhibitors (SSRIs) and comorbidity
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