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Table 6 Descriptive data and score distributions for the postal GPAQ version 2 (n = 20,309)

From: The General Practice Assessment Questionnaire (GPAQ) – Development and psychometric characteristics

GPAQ scale/item N Minimum Maximum Mean SD % with lowest possible score % with highest possible score Alpha
Access (6 items) 19,418 0 100 58.8 (19.5) 0 (n = 11) 1.8 (n = 359) 0.88 (n = 8,277)*
Receptionists (1 item) 20,024 0 100 72.6 (21.8) 0.9 (n = 184) 23.7 (n = 4746) n/a
Continuity of care (1 item) 18,290 0 100 66.6 (23.5) 1.6 (n = 288) 17.7 (n = 3240) n/a
Communication (8 items) 18,463 0 100 77.0 (19.5) 0.1 (n = 24) 19.2 (n = 3554) 0.97 (n = 16,106)
Nursing care (3 items) 13941 0 100 76.4 (18.0) 0.2 (n = 28) 21.5 (n = 3003) 0.96 (n = 13,777)
  1. * note that sample size for reliability analysis is much reduced due to the fact that 'don't' know/never needed to' responses to the two GPAQ telephone access questions are treated as missing for scale scoring purposes.