Table 2. Open in new tab Concentrations...

		Males	Females
TH (ng/mL)	TT3	2.78	2.54–3.05	2.67	1.75–4.59	2.96	2.55–3.36	3.05	1.12–4.49
TT4	36.41	32.49–40.48	36.99	18.61–70.05	37.26	31.73–43.15	35.13	9.53–79.83
PFAS (ng/mL)	brPFOS	0.181	0.116–0.251	0.11	nd–0.669	0.144	0.090–0.215	0.083	nd–0.164
linPFOS	7.32	6.13–8.65	6.31	2.47–19.3	4.35	3.27–5.68	3.62	0.937–14.6
PFNA	1.53	1.19–1.95	1.22	0.377–5.61	1.25	0.988–1.55	1.05	0.415–3.34
PFDA	1.29	1.11–1.48	1.21	0.392–2.65	1.11	0.949–1.27	1.05	0.360–2.08
PFUnDA	6.94	6.10–7.82	6.24	3.47–12.2	5.62	4.99–6.30	5.58	2.47–9.49
PFDoDA	1.58	1.32–1.84	1.56	0.429–2.96	1.16	0.963–1.36	1.22	0.158–2.07
PFTrDA	5.25	4.59–5.91	5.09	2.22–8.42	3.67	3.14–4.16	3.83	1.20–6.07
PFTeDA	0.659	0.521–0.801	0.639	0.084–1.64	0.38	0.277–0.487	0.339	nd–1.01

Males

Females

Mean

CI of mean

Median

Range

Mean

CI of mean

Median

Range

TH (ng/mL)

TT3

2.78

2.54–3.05

2.67

1.75–4.59

2.96

2.55–3.36

3.05

1.12–4.49

TT4

36.41

32.49–40.48

36.99

18.61–70.05

37.26

31.73–43.15

35.13

9.53–79.83

PFAS (ng/mL)

brPFOS

0.181

0.116–0.251

0.11

nd–0.669

0.144

0.090–0.215

0.083

nd–0.164

linPFOS

7.32

6.13–8.65

6.31

2.47–19.3

4.35

3.27–5.68

3.62

0.937–14.6

PFNA

1.53

1.19–1.95

1.22

0.377–5.61

1.25

0.988–1.55

1.05

0.415–3.34

PFDA

1.29

1.11–1.48

1.21

0.392–2.65

1.11

0.949–1.27

1.05

0.360–2.08

PFUnDA

6.94

6.10–7.82

6.24

3.47–12.2

5.62

4.99–6.30

5.58

2.47–9.49

PFDoDA

1.58

1.32–1.84

1.56

0.429–2.96

1.16

0.963–1.36

1.22

0.158–2.07

PFTrDA

5.25

4.59–5.91

5.09

2.22–8.42

3.67

3.14–4.16

3.83

1.20–6.07

PFTeDA

0.659

0.521–0.801

0.639

0.084–1.64

0.38

0.277–0.487

0.339

nd–1.01

		Males	Females
TH (ng/mL)	TT3	2.78	2.54–3.05	2.67	1.75–4.59	2.96	2.55–3.36	3.05	1.12–4.49
TT4	36.41	32.49–40.48	36.99	18.61–70.05	37.26	31.73–43.15	35.13	9.53–79.83
PFAS (ng/mL)	brPFOS	0.181	0.116–0.251	0.11	nd–0.669	0.144	0.090–0.215	0.083	nd–0.164
linPFOS	7.32	6.13–8.65	6.31	2.47–19.3	4.35	3.27–5.68	3.62	0.937–14.6
PFNA	1.53	1.19–1.95	1.22	0.377–5.61	1.25	0.988–1.55	1.05	0.415–3.34
PFDA	1.29	1.11–1.48	1.21	0.392–2.65	1.11	0.949–1.27	1.05	0.360–2.08
PFUnDA	6.94	6.10–7.82	6.24	3.47–12.2	5.62	4.99–6.30	5.58	2.47–9.49
PFDoDA	1.58	1.32–1.84	1.56	0.429–2.96	1.16	0.963–1.36	1.22	0.158–2.07
PFTrDA	5.25	4.59–5.91	5.09	2.22–8.42	3.67	3.14–4.16	3.83	1.20–6.07
PFTeDA	0.659	0.521–0.801	0.639	0.084–1.64	0.38	0.277–0.487	0.339	nd–1.01

Table 2.

Open in new tab

Concentrations of thyroid hormones (nanograms per milliliter of plasma) and per‐ and polyfluoroalkyl substances (nanograms per milliliter of plasma) in male and female chick‐rearing kittiwakes (Rissa tridactyla) caught in Kongsfjorden, Svalbard, in 2013 and 2014^a

		Males				Females
		Mean	CI of mean	Median	Range	Mean	CI of mean	Median	Range
TH (ng/mL)	TT3	2.78	2.54–3.05	2.67	1.75–4.59	2.96	2.55–3.36	3.05	1.12–4.49
TH (ng/mL)	TT4	36.41	32.49–40.48	36.99	18.61–70.05	37.26	31.73–43.15	35.13	9.53–79.83
PFAS (ng/mL)	brPFOS	0.181	0.116–0.251	0.11	nd–0.669	0.144	0.090–0.215	0.083	nd–0.164
	linPFOS	7.32	6.13–8.65	6.31	2.47–19.3	4.35	3.27–5.68	3.62	0.937–14.6
	PFNA	1.53	1.19–1.95	1.22	0.377–5.61	1.25	0.988–1.55	1.05	0.415–3.34
	PFDA	1.29	1.11–1.48	1.21	0.392–2.65	1.11	0.949–1.27	1.05	0.360–2.08
	PFUnDA	6.94	6.10–7.82	6.24	3.47–12.2	5.62	4.99–6.30	5.58	2.47–9.49
	PFDoDA	1.58	1.32–1.84	1.56	0.429–2.96	1.16	0.963–1.36	1.22	0.158–2.07
	PFTrDA	5.25	4.59–5.91	5.09	2.22–8.42	3.67	3.14–4.16	3.83	1.20–6.07
	PFTeDA	0.659	0.521–0.801	0.639	0.084–1.64	0.38	0.277–0.487	0.339	nd–1.01

		Males				Females
		Mean	CI of mean	Median	Range	Mean	CI of mean	Median	Range
TH (ng/mL)	TT3	2.78	2.54–3.05	2.67	1.75–4.59	2.96	2.55–3.36	3.05	1.12–4.49
TH (ng/mL)	TT4	36.41	32.49–40.48	36.99	18.61–70.05	37.26	31.73–43.15	35.13	9.53–79.83
PFAS (ng/mL)	brPFOS	0.181	0.116–0.251	0.11	nd–0.669	0.144	0.090–0.215	0.083	nd–0.164
	linPFOS	7.32	6.13–8.65	6.31	2.47–19.3	4.35	3.27–5.68	3.62	0.937–14.6
	PFNA	1.53	1.19–1.95	1.22	0.377–5.61	1.25	0.988–1.55	1.05	0.415–3.34
	PFDA	1.29	1.11–1.48	1.21	0.392–2.65	1.11	0.949–1.27	1.05	0.360–2.08
	PFUnDA	6.94	6.10–7.82	6.24	3.47–12.2	5.62	4.99–6.30	5.58	2.47–9.49
	PFDoDA	1.58	1.32–1.84	1.56	0.429–2.96	1.16	0.963–1.36	1.22	0.158–2.07
	PFTrDA	5.25	4.59–5.91	5.09	2.22–8.42	3.67	3.14–4.16	3.83	1.20–6.07
	PFTeDA	0.659	0.521–0.801	0.639	0.084–1.64	0.38	0.277–0.487	0.339	nd–1.01

The data have been bootstrapped (5000 replicates), and the mean of the descriptive statistics is presented (mean, 95% confidence interval of the mean, median, and range, of the original data set): For males, branched perfluoroctane sulfonate anion (brPFOS) was left‐censored; and for females, brPFOS and PFTeDA were left‐censored, and the values presented are estimated based on the Kaplan‐Meier technique.

nd = nondetect; brPFOS = branched perfluorooctane sulfonate anion; linPFOS = linear perfluorooctane sulfonate anion; PFDA = perfluorodecanoate; PFDoDA = perfluorododecanoate; PFNA = perfluorononanoate; PFTeDA = perfluorotetradecanoate; PFTrDA = perfluorotridecanoate; PFUnDA = perfluoroundecanoate; T3 = triiodothyronine; T4 = thyroxine.

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