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Table 2 Characteristics of the studies (time-trend analysis) included in the meta-analysis

From: The quadrivalent HPV vaccine is protective against genital warts: a meta-analysis

First author (year)

Study type

Country

Year of vaccine introduction

Programme description

Pre-vaccination period

Post-vaccination period

Patient characteristics

age group + gender

Number of patients diagnosed with GW/ overall population

Pre-vaccination period

Post-vaccination period

Dominiak-Felden (2015) [17]

time-trend analysis

Belgium

2007

Reimbursed for:

• women 12 to 18 years old

2006–2007

2007–2013

16–22 years women

244/63180

12/24791

Chow (2015) [28]

time-trend analysis

Australia

2007

School-based programme for:

• girls 12–13 years

Catch-up programmes (2007–2009) for:

• 13–18 years old schoolgirls

• 18–26 years old women

2004–2007

2007–2014

Australian-born women < 21 years

159/787

74/1340

Australian-born women 21–32 years

378/2801

322/5662

Australian-born heterosexual men < 21 years

62/531

112/1531

Australian-born heterosexual men 21–32 years

520/2726

789/6539

Ali (2013) [27]

time-trend analysis

Australia

2007

School-based programme for:

• girls 12–13 years

Catch-up programmes (2007–2009) for:

• 13–18 years old schoolgirls

• 18–26 years old women

2004–2007

2007–2011

< 21 years women

405/3949

136/5456

21–30 years women

942/7683

407/7545

< 21 years heterosexual men

132/1289

93/2693

21–30 years heterosexual men

1195/6617

1034/8530

Harrison (2014) [29]

time-trend analysis

Australia

2007

School-based programme for:

• girls 12–13 years

Catch-up programmes (2007–2009) for:

• 13–18 years old schoolgirls

• 18–26 years old women

2002–2006

2008–2012

15–27 years women

189/43596

71/42393

15–27 years men

103/21157

87/18745

Read (2011) [31]

time-trend analysis

Australia

2007

School-based programme for:

• girls 12–13 years

Catch-up programmes (2007–2009) for:

• 13–18 years old schoolgirls

• 18–26 years old women

2004–2007

2007–2011

< 21 years women

168/886

70/898

21–29 years women

371/2808

247/3546

< 21 years heterosexual men

53/378

45/445

21–29 years heterosexual men

460/2524

500/3479

Fairley (2009) [30]

time-trend analysis

Australia

2007

School-based programme for:

• girls 12–13 years

Catch-up programmes (2007–2009 for:

• 13–18 years old schoolgirls

• 18–26 years old women

2004–2007

2008

< 28 years women

850/6693

130/1970

all men

2024/16727

473/4778

Checchi (2019) [32]

time-trend analysis

England

2012

School-based programme for:

• girls 12–13 years

Catch-up programmes for:

• all females up to 18 years

2014

2017

15–24 years females

18,973/

3,341,260

13,170/

3,282,554

15–24 years heterosexual males

15,981/

3,395,435

11,601/

3,356,744

Mann (2019) [33]

time-trend analysis

USA

2011

School-based programme for:

• girls 11–12 years

• boys 11–12 years

Catch-up programmes for:

• girls up to 26 years

• boys up to 21 years (for bisexual, MSM up to 26 years)

2010

2016

all females (median age: 26 years)

973/42289

193/21484

all males

(median age: 29 years)

3584/49097

1187/26983

  1. GW: genital wart, MSM: men who have sex with men