Table 3. Open in new tab Association...

Explanatory variable	All assistance	Nurse-assistance	Family-assistance
PD start year (reference = 2013)			PD start year^a
2006	1.17 (1.07–1.29)	1.08 (0.96–1.22)	0.94 (0.92–0.97) ^a
2007	1.27 (1.15–1.39)	1.19 (1.05–1.34)
2008	1.24 (1.12–1.37)	1.13 (0.99–1.27)
2009	1.21 (1.10–1.32)	1.18 (1.05–1.33)
2010	1.14 (1.04–1.26)	1.14 (1.02–1.28)
2011	1.09 (0.99–1.21)	1.08 (0.96–1.21)
2012	1.16 (1.06–1.28)	1.15 (1.03–1.27)
2013	Reference	Reference
2014	1.08 (0.99–1.19)	1.14 (1.02–1.29)
2015	1.12 (1.03–1.23)	1.24 (1.11–1.34)
Age, for a 10-year increase	1.79 (1.75–1.83)	1.83 (1.79–1.88)	1.19 (1.14–1.25)
Gender, male	0.71 (0.68–0.74)	0.70 (0.66–0.73)	1.06 (0.94–1.20)
Diabetes	1.13 (1.07–1.20)	1.10 (1.03–1.18)	1.21 (1.02–1.44)
Modified CCI (per unit)	1.09 (1.08–1.11)	1.06 (1.05–1.08)	1.14 (1.10–1.18)
Suboptimal starters	1.11 (1.04–1.19)	1.17 (1.07–1.26)	0.90 (0.73–1.10)
Underlying nephropathy
Polycystic kidney disease	Reference	Reference	Reference
Diabetes	2.30 (1.93–2.74)	2.16 (1.77–2.63)	1.93 (1.26–2.96)
Interstitial nephritis	2.16 (1.79–2.61)	2.04 (1.65–2.51)	2.02 (1.28–3.18)
Glomerulonephritis	1.36 (1.13–1.63)	1.26 (1.02–1.55)	1.42 (0.92–2.18)
Unknown	2.18 (1.83–2.59)	2.09 (1.72–2.54)	1.73 (1.13–2.66)
Uropathy	1.84 (1.48–2.29)	1.72 (1.34–2.21)	1.79 (1.06–2.99)
Vascular	2.35 (1.99–2.78)	2.22 (1.84–2.68)	1.91 (1.27–2.87)
Systemic disease	1.87 (1.47–2.38)	1.77 (1.35–2.33)	1.72 (0.97–3.04)
Other	2.23 (1.68–2.95)	2.06 (1.50–2.82)	2.43 (1.18–5.01)
Therapy before PD initiation
No therapy	Reference	Reference	Reference
HD	1.14 (1.08–1.20)	1.04 (0.97–1.12)	1.32 (1.13–1.54)
Transplantation	0.54 (0.41–0.71)	0.54 (0.39–0.74)	0.67 (0.39–1.15)
Type of centre
Academic hospital	Reference	Reference	Reference
Community hospital	1 (0.95–1.07)	1.03 (0.96–1.11)	0.94 (0.79–1.11)
Non-profit	1 (0.93–1.07)	0.98 (0.90–1.07)	1.08 (0.90–1.30)
Private hospital	0.94 (0.87–1.02)	0.94 (0.84–1.04)	0.99 (0.77–1.28)
Centre experience (new patients per year)
≤10	Reference	Reference	Reference
>10	1.14 (1.09–1.20)	1.17 (1.10–1.23)	0.99 (0.87–1.13)

Explanatory variable

All assistance

Nurse-assistance

Family-assistance

PR (95% CI)

PD start year (reference = 2013)

PD start year^a

2006

1.17 (1.07–1.29)

1.08 (0.96–1.22)

0.94 (0.92–0.97) ^a

2007

1.27 (1.15–1.39)

1.19 (1.05–1.34)

2008

1.24 (1.12–1.37)

1.13 (0.99–1.27)

2009

1.21 (1.10–1.32)

1.18 (1.05–1.33)

2010

1.14 (1.04–1.26)

1.14 (1.02–1.28)

2011

1.09 (0.99–1.21)

1.08 (0.96–1.21)

2012

1.16 (1.06–1.28)

1.15 (1.03–1.27)

2013

Reference

2014

1.08 (0.99–1.19)

1.14 (1.02–1.29)

2015

1.12 (1.03–1.23)

1.24 (1.11–1.34)

Age, for a 10-year increase

1.79 (1.75–1.83)

1.83 (1.79–1.88)

1.19 (1.14–1.25)

Gender, male

0.71 (0.68–0.74)

0.70 (0.66–0.73)

1.06 (0.94–1.20)

Diabetes

1.13 (1.07–1.20)

1.10 (1.03–1.18)

1.21 (1.02–1.44)

Modified CCI (per unit)

1.09 (1.08–1.11)

1.06 (1.05–1.08)

1.14 (1.10–1.18)

Suboptimal starters

1.11 (1.04–1.19)

1.17 (1.07–1.26)

0.90 (0.73–1.10)

Underlying nephropathy

Polycystic kidney disease

Reference

Diabetes

2.30 (1.93–2.74)

2.16 (1.77–2.63)

1.93 (1.26–2.96)

Interstitial nephritis

2.16 (1.79–2.61)

2.04 (1.65–2.51)

2.02 (1.28–3.18)

Glomerulonephritis

1.36 (1.13–1.63)

1.26 (1.02–1.55)

1.42 (0.92–2.18)

Unknown

2.18 (1.83–2.59)

2.09 (1.72–2.54)

1.73 (1.13–2.66)

Uropathy

1.84 (1.48–2.29)

1.72 (1.34–2.21)

1.79 (1.06–2.99)

Vascular

2.35 (1.99–2.78)

2.22 (1.84–2.68)

1.91 (1.27–2.87)

Systemic disease

1.87 (1.47–2.38)

1.77 (1.35–2.33)

1.72 (0.97–3.04)

Other

2.23 (1.68–2.95)

2.06 (1.50–2.82)

2.43 (1.18–5.01)

Therapy before PD initiation

No therapy

Reference

1.14 (1.08–1.20)

1.04 (0.97–1.12)

1.32 (1.13–1.54)

Transplantation

0.54 (0.41–0.71)

0.54 (0.39–0.74)

0.67 (0.39–1.15)

Type of centre

Academic hospital

Reference

Community hospital

1 (0.95–1.07)

1.03 (0.96–1.11)

0.94 (0.79–1.11)

Non-profit

1 (0.93–1.07)

0.98 (0.90–1.07)

1.08 (0.90–1.30)

Private hospital

0.94 (0.87–1.02)

0.94 (0.84–1.04)

0.99 (0.77–1.28)

Centre experience (new patients per year)

≤10

Reference

>10

1.14 (1.09–1.20)

1.17 (1.10–1.23)

0.99 (0.87–1.13)

Explanatory variable	All assistance	Nurse-assistance	Family-assistance
PD start year (reference = 2013)			PD start year^a
2006	1.17 (1.07–1.29)	1.08 (0.96–1.22)	0.94 (0.92–0.97) ^a
2007	1.27 (1.15–1.39)	1.19 (1.05–1.34)
2008	1.24 (1.12–1.37)	1.13 (0.99–1.27)
2009	1.21 (1.10–1.32)	1.18 (1.05–1.33)
2010	1.14 (1.04–1.26)	1.14 (1.02–1.28)
2011	1.09 (0.99–1.21)	1.08 (0.96–1.21)
2012	1.16 (1.06–1.28)	1.15 (1.03–1.27)
2013	Reference	Reference
2014	1.08 (0.99–1.19)	1.14 (1.02–1.29)
2015	1.12 (1.03–1.23)	1.24 (1.11–1.34)
Age, for a 10-year increase	1.79 (1.75–1.83)	1.83 (1.79–1.88)	1.19 (1.14–1.25)
Gender, male	0.71 (0.68–0.74)	0.70 (0.66–0.73)	1.06 (0.94–1.20)
Diabetes	1.13 (1.07–1.20)	1.10 (1.03–1.18)	1.21 (1.02–1.44)
Modified CCI (per unit)	1.09 (1.08–1.11)	1.06 (1.05–1.08)	1.14 (1.10–1.18)
Suboptimal starters	1.11 (1.04–1.19)	1.17 (1.07–1.26)	0.90 (0.73–1.10)
Underlying nephropathy
Polycystic kidney disease	Reference	Reference	Reference
Diabetes	2.30 (1.93–2.74)	2.16 (1.77–2.63)	1.93 (1.26–2.96)
Interstitial nephritis	2.16 (1.79–2.61)	2.04 (1.65–2.51)	2.02 (1.28–3.18)
Glomerulonephritis	1.36 (1.13–1.63)	1.26 (1.02–1.55)	1.42 (0.92–2.18)
Unknown	2.18 (1.83–2.59)	2.09 (1.72–2.54)	1.73 (1.13–2.66)
Uropathy	1.84 (1.48–2.29)	1.72 (1.34–2.21)	1.79 (1.06–2.99)
Vascular	2.35 (1.99–2.78)	2.22 (1.84–2.68)	1.91 (1.27–2.87)
Systemic disease	1.87 (1.47–2.38)	1.77 (1.35–2.33)	1.72 (0.97–3.04)
Other	2.23 (1.68–2.95)	2.06 (1.50–2.82)	2.43 (1.18–5.01)
Therapy before PD initiation
No therapy	Reference	Reference	Reference
HD	1.14 (1.08–1.20)	1.04 (0.97–1.12)	1.32 (1.13–1.54)
Transplantation	0.54 (0.41–0.71)	0.54 (0.39–0.74)	0.67 (0.39–1.15)
Type of centre
Academic hospital	Reference	Reference	Reference
Community hospital	1 (0.95–1.07)	1.03 (0.96–1.11)	0.94 (0.79–1.11)
Non-profit	1 (0.93–1.07)	0.98 (0.90–1.07)	1.08 (0.90–1.30)
Private hospital	0.94 (0.87–1.02)	0.94 (0.84–1.04)	0.99 (0.77–1.28)
Centre experience (new patients per year)
≤10	Reference	Reference	Reference
>10	1.14 (1.09–1.20)	1.17 (1.10–1.23)	0.99 (0.87–1.13)

Table 3.

Open in new tab

Association between PD start year and the PR of assisted PD initiation, adjusting for patient characteristics, for each type of assistance

Explanatory variable	All assistance	Nurse-assistance	Family-assistance
Explanatory variable	PR (95% CI)	PR (95% CI)	PR (95% CI)
PD start year (reference = 2013)			PD start year^a
2006	1.17 (1.07–1.29)	1.08 (0.96–1.22)	0.94 (0.92–0.97) ^a
2007	1.27 (1.15–1.39)	1.19 (1.05–1.34)
2008	1.24 (1.12–1.37)	1.13 (0.99–1.27)
2009	1.21 (1.10–1.32)	1.18 (1.05–1.33)
2010	1.14 (1.04–1.26)	1.14 (1.02–1.28)
2011	1.09 (0.99–1.21)	1.08 (0.96–1.21)
2012	1.16 (1.06–1.28)	1.15 (1.03–1.27)
2013	Reference	Reference
2014	1.08 (0.99–1.19)	1.14 (1.02–1.29)
2015	1.12 (1.03–1.23)	1.24 (1.11–1.34)
Age, for a 10-year increase	1.79 (1.75–1.83)	1.83 (1.79–1.88)	1.19 (1.14–1.25)
Gender, male	0.71 (0.68–0.74)	0.70 (0.66–0.73)	1.06 (0.94–1.20)
Diabetes	1.13 (1.07–1.20)	1.10 (1.03–1.18)	1.21 (1.02–1.44)
Modified CCI (per unit)	1.09 (1.08–1.11)	1.06 (1.05–1.08)	1.14 (1.10–1.18)
Suboptimal starters	1.11 (1.04–1.19)	1.17 (1.07–1.26)	0.90 (0.73–1.10)
Underlying nephropathy
Polycystic kidney disease	Reference	Reference	Reference
Diabetes	2.30 (1.93–2.74)	2.16 (1.77–2.63)	1.93 (1.26–2.96)
Interstitial nephritis	2.16 (1.79–2.61)	2.04 (1.65–2.51)	2.02 (1.28–3.18)
Glomerulonephritis	1.36 (1.13–1.63)	1.26 (1.02–1.55)	1.42 (0.92–2.18)
Unknown	2.18 (1.83–2.59)	2.09 (1.72–2.54)	1.73 (1.13–2.66)
Uropathy	1.84 (1.48–2.29)	1.72 (1.34–2.21)	1.79 (1.06–2.99)
Vascular	2.35 (1.99–2.78)	2.22 (1.84–2.68)	1.91 (1.27–2.87)
Systemic disease	1.87 (1.47–2.38)	1.77 (1.35–2.33)	1.72 (0.97–3.04)
Other	2.23 (1.68–2.95)	2.06 (1.50–2.82)	2.43 (1.18–5.01)
Therapy before PD initiation
No therapy	Reference	Reference	Reference
HD	1.14 (1.08–1.20)	1.04 (0.97–1.12)	1.32 (1.13–1.54)
Transplantation	0.54 (0.41–0.71)	0.54 (0.39–0.74)	0.67 (0.39–1.15)
Type of centre
Academic hospital	Reference	Reference	Reference
Community hospital	1 (0.95–1.07)	1.03 (0.96–1.11)	0.94 (0.79–1.11)
Non-profit	1 (0.93–1.07)	0.98 (0.90–1.07)	1.08 (0.90–1.30)
Private hospital	0.94 (0.87–1.02)	0.94 (0.84–1.04)	0.99 (0.77–1.28)
Centre experience (new patients per year)
≤10	Reference	Reference	Reference
>10	1.14 (1.09–1.20)	1.17 (1.10–1.23)	0.99 (0.87–1.13)

Explanatory variable	All assistance	Nurse-assistance	Family-assistance
Explanatory variable	PR (95% CI)	PR (95% CI)	PR (95% CI)
PD start year (reference = 2013)			PD start year^a
2006	1.17 (1.07–1.29)	1.08 (0.96–1.22)	0.94 (0.92–0.97) ^a
2007	1.27 (1.15–1.39)	1.19 (1.05–1.34)
2008	1.24 (1.12–1.37)	1.13 (0.99–1.27)
2009	1.21 (1.10–1.32)	1.18 (1.05–1.33)
2010	1.14 (1.04–1.26)	1.14 (1.02–1.28)
2011	1.09 (0.99–1.21)	1.08 (0.96–1.21)
2012	1.16 (1.06–1.28)	1.15 (1.03–1.27)
2013	Reference	Reference
2014	1.08 (0.99–1.19)	1.14 (1.02–1.29)
2015	1.12 (1.03–1.23)	1.24 (1.11–1.34)
Age, for a 10-year increase	1.79 (1.75–1.83)	1.83 (1.79–1.88)	1.19 (1.14–1.25)
Gender, male	0.71 (0.68–0.74)	0.70 (0.66–0.73)	1.06 (0.94–1.20)
Diabetes	1.13 (1.07–1.20)	1.10 (1.03–1.18)	1.21 (1.02–1.44)
Modified CCI (per unit)	1.09 (1.08–1.11)	1.06 (1.05–1.08)	1.14 (1.10–1.18)
Suboptimal starters	1.11 (1.04–1.19)	1.17 (1.07–1.26)	0.90 (0.73–1.10)
Underlying nephropathy
Polycystic kidney disease	Reference	Reference	Reference
Diabetes	2.30 (1.93–2.74)	2.16 (1.77–2.63)	1.93 (1.26–2.96)
Interstitial nephritis	2.16 (1.79–2.61)	2.04 (1.65–2.51)	2.02 (1.28–3.18)
Glomerulonephritis	1.36 (1.13–1.63)	1.26 (1.02–1.55)	1.42 (0.92–2.18)
Unknown	2.18 (1.83–2.59)	2.09 (1.72–2.54)	1.73 (1.13–2.66)
Uropathy	1.84 (1.48–2.29)	1.72 (1.34–2.21)	1.79 (1.06–2.99)
Vascular	2.35 (1.99–2.78)	2.22 (1.84–2.68)	1.91 (1.27–2.87)
Systemic disease	1.87 (1.47–2.38)	1.77 (1.35–2.33)	1.72 (0.97–3.04)
Other	2.23 (1.68–2.95)	2.06 (1.50–2.82)	2.43 (1.18–5.01)
Therapy before PD initiation
No therapy	Reference	Reference	Reference
HD	1.14 (1.08–1.20)	1.04 (0.97–1.12)	1.32 (1.13–1.54)
Transplantation	0.54 (0.41–0.71)	0.54 (0.39–0.74)	0.67 (0.39–1.15)
Type of centre
Academic hospital	Reference	Reference	Reference
Community hospital	1 (0.95–1.07)	1.03 (0.96–1.11)	0.94 (0.79–1.11)
Non-profit	1 (0.93–1.07)	0.98 (0.90–1.07)	1.08 (0.90–1.30)
Private hospital	0.94 (0.87–1.02)	0.94 (0.84–1.04)	0.99 (0.77–1.28)
Centre experience (new patients per year)
≤10	Reference	Reference	Reference
>10	1.14 (1.09–1.20)	1.17 (1.10–1.23)	0.99 (0.87–1.13)

According to the spline regression, PD start year was modelled as a linear variable (per year).

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