Table 3. Time-series analysis of care consumption for the different phases of the pandemic compared with pre-pandemic of patients registered with their GPs localised in the North (UMCG), East (RUMC), and South (MUMC) of the Netherlands in 2019, 2020, and 2021
North (UMCG)East (RUMC)South (MUMC)
Mean number of contacts per week per 1000 patients, pre-pandemic 107.18 91.52 91.21
Time (SE)–0.07 (0.1)0.02 (0.11)–0.09 (0.09)
Intercept (SE) TAI (SE) Intercept (SE) TAI (SE) Intercept (SE) TAI (SE)
Phase 1a9.88 (8.92) –6.86 (2.24)a 12.85 (9.91) –5.74 (2.49)a 8.07 (8.12)–2.58 (2.04)
Phase 1b –28.05 (9.84)a 1.14 (2.19) –24.12 (10.93)a 0.09 (2.44)–10.72 (8.96)0.59 (2)
Phase 2a6.57 (10.01)–0.07 (2.77)–5.44 (11.12)1.12 (3.08)14.90 (9.11)0.91 (2.52)
Phase 2b–5.67 (9.16)1.24 (1.06)–5.74 (10.18)–0.59 (1.18)10.50 (8.34)–0.47 (0.97)
Phase 3a–2.21 (11.48)1.37 (5.19)–5.43 (12.75)–5.12 (5.76)11.48 (10.44)–3.41 (4.72)
Phase 3b6.92 (10.08)1.29 (1.93) 37.88 (11.19)a –8.01 (2.14)a 9.77 (9.17)0.45 (1.75)
Phase 3c–13.60 (12.34)9.67 (5.19)–20.26 (13.71)6.28 (5.76)–10.72 (11.23) 11.79 (4.72)a
Phase 48.32 (10.03)0.80 (0.99)–11.84 (11.14)1.79 (1.10)16.38 (9.13)1.01 (0.90)
Phase 5a–4.02 (13.35) 3.91 (1.41)a –52.71 (14.83)a 8.15 (1.57)a 11.72 (12.15) 2.65 (1.29)a
Phase 5b10.21 (12.44)0.42 (0.67)–0.60 (13.82)–0.62 (0.74) 23.99 (11.32)a –0.67 (0.61)
Phase 6a25.86 (14.54)–1.63 (3.67) 71.06 (16.15)a –24.02 (4.08)a 21.96 (13.23)–0.81 (3.34)
Phase 6b 31.26 (15.77)a –13.03 (5.19)a 6.37 (17.52) –12.62 (5.76)a 25.16 (14.35) –11.01 (4.72)a
Summer 8.02 (4.07)1.41 (4.52)0.21 (3.7)
Autumn –3.25 (3.87)–4.72 (4.3)–6.12 (3.53)
Winter 6.44 (3.87)7.51 (4.3)1.57 (3.52)
R2 0.470.610.40
Adjusted R2 0.350.520.27
Residual SE 11.60 (df = 127)12.88 (df = 127)10.55 (df = 127)
F statistic 3.97a (df = 28; 127)7.09a (df = 28; 127)3.05a (df = 28; 127)
  • a P<0.05. df = degrees of freedom. MUMC = Maastricht University Medical Center. RUMC = Radboud University Medical Center Nijmegen. SE = standard error. TAI = time after intercept. UMCG = University Medical Center Groningen.