Table 4 Predictors of hospitalisations for adults who had a cochlear implant during 2011 to 2021, in New South Wales, Australia

Sex

 Male

Ref

Ref

 Female

1.45 (1.29, 1.63) ^*

1.23 (1.09, 1.40) ^**

0.92 (0.84, 1.01)

-

Place of residence

 Urban

Ref

Ref

Ref

 Rural

1.70 (1.48, 1.94) ^**

-

0.86 (0.77, 0.95) ^*

0.84 (0.75, 0.93) ^*

Socio-economic index

 1 (most disadvantaged)

1.09 (0.91, 1.30)

0.87 (0.75, 1.00)

 2

2.00 (1.69, 2.37) ^**

-

0.79 (0.70, 0.90) ^**

-

 3

1.21 (1.01, 1.44)

-

0.92 (0.80, 1.05)

-

 4

1.08 (0.89, 1.31)

-

0.93 (0.81, 1.07)

-

 5 (least disadvantaged)

Ref

-

Ref

-

Number of Charlson comorbidities

 None

Ref

Ref

Ref

Ref

 ≥ 1

4.04 (3.29, 4.95) ^**

3.51 (2.77, 4.43) ^**

1.16 (1.02, 1.32) ^*

1.09 (0.96, 1.25)

Mental health disorder diagnosis

 No

Ref

Ref

Ref

 Yes

1.53 (1.12, 2.09) ^*

1.60 (1.20, 2.13) ^**

1.44 (1.07, 1.94) ^*

-

Number of implants

 1

Ref

Ref

Ref

Ref

 ≥ 2

1.39 (1.23, 1.57) ^**

1.53 (1.35, 1.73) ^**

1.66 (1.51, 1.83) ^**

1.44 (1.30, 1.59) ^**

Number of implant removals

 No removal

Ref

Ref

 ≥ 1

1.16 (0.92, 1.46)

-

1.24 (1.02, 1.52) ^*

-

Mechanical complications

 No

Ref

Ref

Ref

 Yes

1.41 (0.79, 2.54)

2.06 (1.11, 3.83) ^*

0.98 (0.53, 1.80)

-

Total length of stay

1.06 (1.01, 1.11) ^*

-

-

-

All-cause NAP contacts

 1–6

Ref

Ref

Ref

Ref

 7–12

1.38 (1.34, 1.68) ^*

1.32 (1.10, 1.59) ^*

1.08 (0.94, 1.25)

1.14 (0.99, 1.30)

 ≥ 13

3.19 (2.78, 3.66) ^**

2.35 (2.05, 2.70) ^**

1.49 (1.33 1.66) ^**

1.58 (1.42, 1.76) ^**

Hospital type

Public

Ref

Ref

Ref

Ref

Private

0.68 (0.61, 0.77) ^**

1.19 (1.04, 1.36) ^**

1.18 (1.06 1.31) ^*

1.35 (1.21, 1.51) ^**